FSU will now rematch with Xavier, who they lost to in the 2017 NCAA Tournament.
The first two, by graduate transfer Kassius Robertson and junior point guard Jordan Geist, went in.
Yet when Missouri made its run in the second half, it was Porter and Robertson leading the charge. In his final college game, Rau had a career-high in minutes (12) and tied his career-high in points (three).
FSU basketball led by three points with just under 12 minutes left to go in the first half - and that would be the last lead they would have all game.
"I don't know why we kept doing it, we just started out slow and it took us being down to come out there and try and cut people's head off on offense and defense", Tilmon said.
The Seminoles scored 10 points in the first half off turnovers, one for each of Missouri's miscues, and shot 63 percent from three-point range as Florida State went on a 13-0 run and took 22-point lead into halftime.
Missouri was also without its second leading scorer in Jordan Barnett, who was suspended following a DWI arrest.
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"I thought the story for the first half was our guys were connected defensively, and I thought their effort was as a result of respect we have for Missouri and some of the tapes we've seen", coach Leonard Hamilton said. In just his second game back from back surgery, he said he second-guessed himself.
"He made a couple of boneheaded mistakes". "That's what's going to happen if you aren't playing the whole season".
To be clear, Porter, Jr.'s talent is not the question here.
The Tigers' defense buckled down and held Florida State scoreless for 3 minutes while Kevin Puryear and Porter Jr. added layups through traffic to whittle the deficit to 11. Visit SportsLine now to get a strong pick from an advanced computer model that entered the tournament on a red-hot 11-1 run.
After Missouri made it a two-possession game, the Tigers appeared to run out of gas. "By the time that happened, all of us were dead exhausted".
Mann injured his groin in the first half and appeared to aggravate the injury after slipping on the court in the second half. The Tigers also played and took down some tough competition in the non-conference portion of their schedule, defeating teams like UCF, St. John's and Iowa State, along with fellow NCAA tournament team Stephen F. Austin while Narrowly losing to West Virginia and a loss to Utah thrown in there as well.
"It's nice to get over that hump", Porter Jr. said. "Every team is great in the tournament". Missouri has no pressure on them this year and that's what makes them a unsafe team.