Oklahoma entered Allen Fieldhouse on Saturday leading the league in scoring offense and field goal percentage.
The Sooners' often prolific offense hit a wall against Kansas center Jeff Withey.
Oklahoma shot just over 35 percent in a 67-54 loss to the third-ranked Jayhawks, and Sooners coach Lon Kruger was quick to credit their struggles to the 7-foot senior.
Withey who finished with 13 points, nine rebounds, four blocks and three steals.
''Withey changes everything on the interior and does a terrific job,'' said Kruger, who is no stranger to struggling against the Jayhawks after coaching at Kansas State. ''I thought he set the tone early in the ball game and we just never did get any flow offensively.''
The Sooners shot 28.6 percent in the first half but kept the game within reach by forcing eight turnovers. But Kansas built a double-digit lead in the second half and pulled away.
The Sooners were outscored 28-16 in the paint and outrebounded 41-31 - much of that influenced by ...