For just the third time, two teams seeded No. 11 or lower reached the regional semifinals. But can 11-seeds Buffalo and Central Michigan -- a pair of Mid-American Conference teams which are in the regional semifinals for the first time -- bring the #MACtion to the Elite Eight?
Double-digit seeds are just 3-20 all-time in the Sweet 16, with 11th-seeded Gonzaga (2011), 10th-seeded Oregon (2017) and 10th-seeded Lamar (1991) as the only teams to reach the regional finals.
According to ESPN's Basketball Power Index, there is an 8.2 percent chance that all four No. 1 seeds reach the Final Four.