STILLWATER, Okla. (AP) -- Marcus Smart scored 28 points, Le'Bryan Nash added a season-high 26 and No. 17 Oklahoma State beat Oklahoma 84-79 in overtime Saturday for its third straight down-to-the-wire win at home.
Smart fed Nash for a right-handed slam with 53 seconds left in overtime to put the Cowboys (19-5, 9-3 Big 12) up 80-79, and Oklahoma couldn't come up with an answer. Markel Brown's steal led to a fastbreak layup by Michael Cobbins, and Smart blocked Steven Pledger's attempt at a tying 3-pointer that gave Oklahoma State the ball back with 18 seconds to go.
Smart sealed it with two free throws, and Cowboys fans stormed the court after winning their seventh straight game. The Cowboys' last two home wins were by two points apiece.
Romero Osby led the Sooners (16-8, 7-5) with 18 points and 15 rebounds, and Sam Grooms had a career-best 18 points.