Overall, the Noles have made 16 appearances in March Madness, last making the Sweet 16 in 2011. For the seventh time in his 10 seasons as a head coach, Martin has won 20 games.
Xavier is a No. 1 seed for the first time, earned by winning the Big East.
Missouri and Florida State is seen as a pick'em right now by Las Vegas' sportsbooks.
Second-seeded North Carolina might have become a top seed had the Tar Heels won the ACC Tournament, but the defending national champion is battle-tested and has won nine of its last 12 games.More news: Sereno refuses to resign; says she'll fight 'til the end
As most No. 8 vs No. 9 seed games are, this one figures to be a toss-up.
Third-seeded Michigan roared to the Big Ten Tournament title with victories over Michigan State and Purdue and has to be considered one of the unsafe teams in the field.
Here are 5 things to know about the Seminoles.
It's not going to get any easier for Missouri, as the Tigers will be without senior Jordan Barnett, their second-leading scorer.
Missouri, No. 17 in the latest Associated Press poll and No. 24 in the most recent Ratings Percentage Index standings, lost two of their final three games, both by double digits to NCAA Tournament teams, Texas A&M and Georgia. Barnett will travel and practice with the team in Nashville, and he could be available for Sunday if the Tigers do advance. But they have size on their bench, and by size I mean two players over seven feet tall who average over 10 minutes a game. Will that come back to haunt the Tigers? They made the tourney past year, beating Florida Gulf Coast in the first round before falling to Xavier in the second round.