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Sue Ogrocki, Associated Press
Texas Tech forward Terran Petteway, left, shoots over Oklahoma forward Romero Osby, right, in the first half of an NCAA college basketball game in Norman, Okla., Tuesday, Jan. 17, 2012.

NORMAN, Okla. — Steven Pledger scored 17 points, Romero Osby added 15 and Oklahoma beat Texas Tech 64-55 on Tuesday night to keep the Red Raiders winless in Big 12 play.

Texas Tech (7-10, 0-5) trailed throughout the second half but pulled within 48-47 when Jordan Tolbert put back his own miss with 4:18 to play. Robert Lewandowski had a chance underneath to give the Red Raiders the lead but missed, and the Sooners (12-5, 2-3) pulled away after that.

Osby scored underneath after a timeout, and he added a two-handed slam and seven free throws down the stretch to close it out.

Javarez Willis scored 16 points and Jaye Crockett had 14 points and 10 rebounds for Texas Tech, which got just 23 points on 6 for 28 shooting from its starters.