By STEPHEN HAWKINS AP Basketball Writer
1362083791 Oklahoma State Beats SMU 68 58 In Double OT

Jean-Paul Olukemi #0 of the Oklahoma State Cowboys takes a shot against the Southern Methodist Mustangs at American Airlines Center on December 28, 2011 in Dallas, Texas. (Photo by Ronald Martinez/Getty Images)

DALLAS (AP) — Cezar Guerrero scored seven of his 14 points at the start of the second overtime and Oklahoma State defeated SMU 68-58 Wednesday night.

The Cowboys (7-5) closed the game with a 16-0 run, with the final six points in the first overtime before outscoring SMU 10-0 in the second extra period.

SMU (7-5) had matched its biggest lead of the game when Robert Nyakundi made three free throws for a 58-52 advantage with 1:17 left in the first overtime. Keiton Page then made his only two 3-pointers of the game in a span of 33 seconds, with a miss by Nyakundi between those shots.

Guerrero opened the second overtime with a 16-foot jumper. The freshman guard then made a 3-pointer and had a driving layup to stretch the lead to 65-58.

Page led Oklahoma State with 27 points. Page was only 2 of 9 on 3-pointers, but also made 11 free throws, three coming after Guerrero’s surge to close out the scoring.

Nyakundi had 20 points and 11 rebounds for SMU, which has lost 10 in a row against the Cowboys since beating them in 1985. Shawn Williams had 11 points.

The game was the first of a doubleheader at the American Airlines Center, home of the defending NBA champion Dallas Mavericks. Sixth-ranked Baylor played No. 15 Mississippi State in the nightcap.

After Guerrero’s jumper from the free-throw circle began the second overtime, Markel Brown blocked an SMU shot. When the 3-pointer for Guerrero from the top of the key went through the hoop, he pumped his fist wildly in celebration. Then after Nyakundi had a shot blocked by Michael Cobbins, Guerrero drove through a gap for a layup.

With just over a minute left in regulation, Oklahoma State took a 49-47 lead when Page made two free throws. Page, realizing that Jeremiah Samarrippas was coming toward him out of control, slung a shot from beyond the arc while drawing the foul and being twisted to the ground.

SMU got even when Rodney Clinkscales scored on a reverse layup with 47 seconds left after Leslee Smith’s pass from the free-throw line.

Smith then came up with a steal on a bad pass by Page, and the Mustangs tried to set up one final shot at winning in regulation.

Samarrippas missed a layup with 4 seconds remaining, leaving the Cowboys enough time to get off one more shot. Jean-Paul Olukemi missed a jumper at the buzzer.

Nyakundi hit a 3-pointer to start overtime, and also had his three free throws before the Mustangs went completely cold.

SMU had also gone nearly 9 minutes without a field goal in the second half after Smith’s layup with 12:16 left for a 40-38 left. The Mustangs then missed eight shots in a row and had four turnovers before Smith drove for a one-handed slam with 3:30 left, but still trailed by only one at that point.

(Copyright 2011 by The Associated Press. All Rights Reserved.)