9 seeds went 4-0 against 8 seeds in the 2019 NCAA tournament and 3-1 in 2018. No. 8 seeds then went 3-1 in 2021 and No. 9 seeds responded with a 3-1 performance in 2022 and 2024. In 2017 ...

The No. 13 seed is 7-2 in games decided by one point. Multiple 13 seeds have upset 4 seeds in five years: 1987, 2001, 2008, 2018 and 2021. How much more likely is a 13-4 upset than a 14-3 upset?