KANSAS CITY, Mo., March 10 (UPI) -- Richard Roby helped ignite a second-half surge Thursday night that gave Colorado an 81-69 upset win over Texas in the Big 12 opening round.
Missouri, Iowa State and Kansas State also advanced to the quarterfinals.
Texas was thought to be a cinch for an NCAA Tournament bid after a recent win at Oklahoma State, but the unexpected loss to the 11th-seeded Buffaloes could change that.
The Longhorns attempted 34 three-point shots and made just nine.
Linas Kleiza scored 26 points in helping Missouri fight off Nebraska, 70-67. Thomas Gardner added 13 for the Tigers.
Iowa State coasted past Baylor, 77-57, with Rahshon Clark leading all five starters in double figures with 20 points. The Cyclones shot 66.7 percent from the field in the first half.
Jeremiah Massey scored 18 points for Kansas State as the Wildcats likely ended Texas A&M's hopes for an NCAA Tournament bid with a 68-62 win.
The Wildcats have won four out of five after losing six in a row.
In Friday's quarterfinals, it will be Missouri vs. Oklahoma, Iowa State vs. Texas Tech, Kansas State vs. Kansas and Colorado vs. Oklahoma State.
