Shinnecock Hills Golf Club's demanding setup at 7,434 yards and par 70, featuring wind-exposed fairways, firm greens, and thick rough, creates scoring variance that can bunch contenders and raise playoff odds despite the "No" market holding a slim 54% implied probability. A deep field led by Scottie Scheffler, Rory McIlroy, and other top-ranked players adds competitive pressure, while the USGA's two-hole aggregate playoff format (followed by sudden death if needed) has remained unused since its 2018 adoption. Recent qualifying and entry records underscore broad participation, yet the venue's history of producing spread-out leaderboards supports the current trader consensus. Late weather shifts, final-round pin placements, or unexpected momentum swings among contenders could still narrow the gap and increase tie likelihood.