The Tigers (23-8) will play Thursday in Kansas City, Mo.
In early February, Clemson had only lost two games and beat Duke 74-47. But the Tigers lost six of their last 10, including an 86-81 defeat in the Atlantic Coast Conference tournament to last-place Georgia Tech.
Clemson has had several meetings and energetic practices since returning to campus Friday. Coach Oliver Purnell says the emphasis has been on improving the Tigers' defense.