DALLAS (Ticker) -- Wayne Simien helped No. 15 Kansas dominate Missouri in the second half and propel the Jayhawks into the Big 12 Conference tournament semifinals.
Simien scored a career-high 31 points as Kansas effectively ended Missouri's hope for an NCAA Tournament bid with a 94-69 victory.
"The last 30 minutes, that's about the best we've played," Kansas coach Bill Self said. "Hopefully, we're peaking at the right time. They're confident right now, which is as important as anything."
Kansas (21-7) led, 42-40, at the 16-minute mark of the second half when the contest became a blowout. The Jayhawks rattled off a 26-6 run and led, 68-46, with 8:28 to play.
Simien set a Big 12 tournament record by going 12-of-14 from the field, also taking 11 rebounds. Kansas defeated Missouri three times in a season for the first time since the 1977-78 seaason.
"It's pretty satisfying, making KU history, but our main focus is trying to win the tournament outright," Simien said. "They came out with a lot more energy than we did, but we were fighting for something as well."
Kansas was sloppy in the first half, turning the ball over six times on its first 10 posessions. The Tigers led by as many as 12 points, but the Jayhawks closed the half with a 10-2 spurt to take a 35-33 lead.
Jeff Graves added a season-high 14 points as the Jayhawks shot 57 percent (34-of-57) from the field, the best ever by a Kansas squad.
Arthur Johnson led the Tigers with 26 points. Barring a miracle, Missouri (16-13) dropped out of contention for an at-large bid to the tournament.
"There's no shame in playing in the NIT," Missouri coach Quin Snyder said. "I don't want our season to end like this. I've talked to my team and that would be our feeling."
Kansas will play No. 11 Texas in Saturday's semifinal. The Longhorns narrowly defeatd Oklahoma earlier Friday.