Taylor Swift’s “Patient Zero,” released September 25 as the lead single from the surprise “The Life of a Showgirl: The Encore” expansion, has driven overwhelming trader consensus at 98.9% implied probability. The track posted record single-day streams for a female artist on Spotify, fueled by Swift’s massive fanbase, targeted pre-save campaigns, and immediate radio push. Its glossy pop production and relationship-metaphor lyrics align with the original album’s sound, sustaining momentum into the early October chart week. The music video premiere at the September 27 VMAs adds further visibility. An upset would require a rival track—such as ADÉLA’s rising entries or a major viral release—to post unprecedented streaming gains that eclipse Swift’s established lead, a scenario historically rare for her debut weeks.