Arnold Allen meets Melquizael Costa in the featherweight main event of UFC Fight Night on May 16 at the Meta APEX in Las Vegas. Allen, the No. 7-ranked contender, returns after a unanimous decision loss to Jean Silva in January and seeks to halt a stretch of three defeats in his last four outings amid prior injury layoffs. The British veteran relies on elite fight IQ, defensive grappling, and experience against top competition including Max Holloway. Costa, ranked No. 12 and making his first main-event appearance, arrives on a three-fight win streak capped by a February knockout of Dan Ige. The Brazilian prospect brings forward pressure, finishing power, and improved takedown offense, creating a stylistic contrast centered on whether Allen’s veteran adjustments can neutralize Costa’s recent momentum in a five-round bout.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedThis market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, goes the full scheduled number of rounds and the result is determined by the judges' scorecards. Otherwise, it will resolve to "No."
Draws decided by the judges' scorecards after all scheduled rounds are completed will resolve "Yes." Technical decisions or technical draws declared before all rounds are completed will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Arnold Allen defeats Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Melquizael Costa defeats Arnold Allen at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by submission, including tapout, verbal submission, or technical submission (referee stoppage due to a submission hold). Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 0.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 1.
“Under 0.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 1.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 1 for a 0.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 1.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 2.
“Under 1.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 2.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 2 for a 1.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 2.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 3.
“Under 2.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 3.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 3 for a 2.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 3.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 4.
“Under 3.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 4.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 4 for a 3.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 4.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 5.
“Under 4.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 5.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 5 for a 4.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Arnold Allen meets Melquizael Costa in the featherweight main event of UFC Fight Night on May 16 at the Meta APEX in Las Vegas. Allen, the No. 7-ranked contender, returns after a unanimous decision loss to Jean Silva in January and seeks to halt a stretch of three defeats in his last four outings amid prior injury layoffs. The British veteran relies on elite fight IQ, defensive grappling, and experience against top competition including Max Holloway. Costa, ranked No. 12 and making his first main-event appearance, arrives on a three-fight win streak capped by a February knockout of Dan Ige. The Brazilian prospect brings forward pressure, finishing power, and improved takedown offense, creating a stylistic contrast centered on whether Allen’s veteran adjustments can neutralize Costa’s recent momentum in a five-round bout.
This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
Market Opened: Apr 25, 2026, 6:00 PM ET
Volume
$157,800End Date
May 17, 2026Market Opened
Apr 25, 2026, 6:00 PM ETResolution Source
https://www.ufc.com/eventsResolver
0x65070BE91...This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, goes the full scheduled number of rounds and the result is determined by the judges' scorecards. Otherwise, it will resolve to "No."
Draws decided by the judges' scorecards after all scheduled rounds are completed will resolve "Yes." Technical decisions or technical draws declared before all rounds are completed will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Arnold Allen defeats Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if Melquizael Costa defeats Arnold Allen at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, by KO or TKO, including referee stoppage, doctor stoppage, or corner stoppage. Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.This market will resolve to "Yes" if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, ends by submission, including tapout, verbal submission, or technical submission (referee stoppage due to a submission hold). Otherwise, it will resolve to "No."
If the fight ends in a draw or by disqualification (either fighter), it will resolve "No."
If the bout is ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 0.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 1.
“Under 0.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 1.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 1 for a 0.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 1.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 2.
“Under 1.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 2.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 2 for a 1.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 2.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 3.
“Under 2.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 3.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 3 for a 2.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 3.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 4.
“Under 3.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 4.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 4 for a 3.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Each market will resolve to “Over” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, lasts beyond the listed round threshold.
Each market will resolve to “Under” if the fight between Arnold Allen and Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026, does not last beyond the listed round threshold.
For example:
“Over 4.5 Rounds” will resolve “Yes” if the fight continues past the 2:30 mark of Round 5.
“Under 4.5 Rounds” will resolve “Yes” if the fight ends before the 2:30 mark of Round 5.
If the fight ends exactly at the threshold (e.g., 2:30 of Round 5 for a 4.5 line), it will resolve “50-50.”
If the bout is not scored, postponed beyond May 30, 2026, or canceled, all options will resolve “50-50.”
The resolution source for this market will be official information from the UFC.Arnold Allen meets Melquizael Costa in the featherweight main event of UFC Fight Night on May 16 at the Meta APEX in Las Vegas. Allen, the No. 7-ranked contender, returns after a unanimous decision loss to Jean Silva in January and seeks to halt a stretch of three defeats in his last four outings amid prior injury layoffs. The British veteran relies on elite fight IQ, defensive grappling, and experience against top competition including Max Holloway. Costa, ranked No. 12 and making his first main-event appearance, arrives on a three-fight win streak capped by a February knockout of Dan Ige. The Brazilian prospect brings forward pressure, finishing power, and improved takedown offense, creating a stylistic contrast centered on whether Allen’s veteran adjustments can neutralize Costa’s recent momentum in a five-round bout.
This market will resolve to "Arnold Allen" if Arnold Allen is officially declared the winner of the fight against Melquizael Costa at UFC Fight Night: Allen vs. Costa, scheduled for May 16, 2026.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
It will resolve to "Melquizael Costa" if Melquizael Costa is officially declared the winner.
If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond May 30, 2026, this market will resolve "50-50."
The resolution source for this market will be official information from the UFC.
Market Opened: Apr 25, 2026, 6:00 PM ET
Volume
$157,800End Date
May 17, 2026Market Opened
Apr 25, 2026, 6:00 PM ETResolution Source
https://www.ufc.com/eventsResolver
0x65070BE91...Arnold Allen meets Melquizael Costa in the featherweight main event of UFC Fight Night on May 16 at the Meta APEX in Las Vegas. Allen, the No. 7-ranked contender, returns after a unanimous decision loss to Jean Silva in January and seeks to halt a stretch of three defeats in his last four outings amid prior injury layoffs. The British veteran relies on elite fight IQ, defensive grappling, and experience against top competition including Max Holloway. Costa, ranked No. 12 and making his first main-event appearance, arrives on a three-fight win streak capped by a February knockout of Dan Ige. The Brazilian prospect brings forward pressure, finishing power, and improved takedown offense, creating a stylistic contrast centered on whether Allen’s veteran adjustments can neutralize Costa’s recent momentum in a five-round bout.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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