While the Wildcats are chasing a title, Barnes said he will spend Texas' final few games watching to see who hasn't quit on the season.
"Who's in?" Barnes asked. "If guys check out, decisions will be made."
Kansas State beat Texas by 26 points in their first meeting and came into this one with an eye for testing the Longhorns from long range. Kansas State's first three field goals were 3-pointers.
The Wildcats built a 29-19 lead and looked to be in complete control in the first half but a rash of fouls sent Texas to the free throw line 22 times in the half.
Texas trimmed the lead to three points in the final minute before Rodriguez made two free throws and a Texas turnover set up a 3-pointer by Shane Southwell at the buzzer. Texas was trying to set up for the final shot, but Kabongo dribbled the ball off his left foot. Omari Lawrence scooped up the loose ball and passed to Southwell for the running-3-pointer that made it 40-32.
"That was big," Texas freshman Ioannis Papapetrou said. "Coach talked about it after the game. It changed the momentum. Instead of a one-possession game, it was a three-possession game."
The Wildcats quickly asserted control in the second half, opening a 15-point lead. Rodriguez sparked the run with an easy steal at midcourt and layup and Will Spradling was surrounded by three Texas players and still won a scramble a loose ball at their feet to set up a layup by Thomas Gipson. Southwell made two more 3-pointers and the Wildcats led 65-46 with about 10 minutes to play.