STILLWATER, Okla. — Tiffany Bias scored 23 points and Oklahoma State spurred away to a 12-0 lead and then held off a pair of second-half surges to defeat TCU 65-53 on Tuesday night.Bias hit 6 of 14 shots, including 5-for-8 from 3-point range, with four assists for the Cowgirls (15-1, 4-1 Big 12). Oklahoma State reclaimed the No. 11 spot in the rankings this week after handing Iowa State its first loss on Saturday.The Horned Frogs’ zone defense forced Oklahoma State to shoot just 35.5 percent from the field.“That’s just what we do,” said TCU coach Jeff Mittie said. “We’ve played zone for about 98 percent of possessions this year. They’re an excellent team against any type of defense.”The Cowgirls overcame the poor shooting with 19 offensive rebounds and only 11 turnovers. Oklahoma State was also able to hit eight 3-pointers.Zahna Medley scored 17 for TCU (11-6, 2-3). The Lady Frogs opened the second half with a 10-0 run, making stops on Oklahoma State’s first nine possessions, and twice came within five points. Jada Butts added 12 points off the bench for TCU. The Cowgirls’ firepower was too much with Roshunda Johnson adding 12 points and Brittany Atkins 11. Bias hit a 3-pointer to stop the first TCU rally, and a Johnson 3-pointer blunted the second.