9 vs. 8 upset rankings: How NCAA Tournament coin flips are expected to play out in first round A No. 9 seed has defeated a No. 8 seed five times in the past two years, including twice in 2025 Original Source: https://www.cbssports.com/college-basketball/news/9-vs-8-upset-rankings-how-ncaa-tournament-coin-flips-are-expected-to-play-out-in-first-round/
