The final eight teams punched their tickets to the Sweet 16 on Sunday as the first weekend of the NCAA Tournament came to a close with a series of quality showdowns between teams fighting to keep their seasons alive.

Just four of the top 16 teams seeded in this year's March Madness field (St. John's, Texas A&M, Wisconsin and Iowa State) have been eliminated thus far, leaving the majority of the remaining field as the best of the best.