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The 12-Seed Juggernaut: March Madness's Persistent Upset
19 Mar
Summary
- No. 12 seeds have a 35.6% win rate against No. 5 seeds since 1985.
- Upsets by No. 12 seeds occur frequently, with at least one in most tournaments.
- No. 12 seeds rarely advance deep, with Elite Eight being their best historical run.
The NCAA Tournament's March Madness phase is synonymous with unexpected upsets, particularly the No. 12 seed triumphing over a No. 5 seed. This phenomenon has been a recurring theme, with at least one such upset occurring in most tournaments since 2019, excluding the canceled 2020 season. Since the year 2000, No. 12 seeds have defeated No. 5 seeds 39 times.
Historically, No. 12 seeds boast a 35.6% win percentage against No. 5 seeds, accumulating 57 victories since the tournament expanded to 64 teams in 1985. Despite their propensity for upsets, these Cinderella stories rarely translate into deep tournament runs. The furthest a No. 12 seed has ever advanced is the Elite Eight, a feat achieved by Oregon State in 2018 and Missouri in 2002.
Recent trends show an increased frequency of these upsets, with two No. 5 seeds falling to No. 12 seeds in each of the last two tournaments prior to 2023. Teams like McNeese State and Colorado State have recently contributed to this narrative. However, the challenge of sustaining such a run remains immense, as no No. 12 seed has reached the Final Four.
