Brittney Martin had 20 points and 20 rebounds, leading Oklahoma State past Purdue 73-66 on Monday and into the Notre Dame Regional semifinals.
The Cowgirls (25-8) won their second straight, ending a 15-game stretch in which they had alternated wins and losses. It's the first time since 2008 and the third time Oklahoma State has ever reached the NCAA's Sweet 16. It will face top-seeded Notre Dame on Saturday in South Bend, Ind.
And it came on a night the fifth-seeded Cowgirls lost star point guard Tiffany Bias for nearly 10 minutes in the second half with what appeared to be a left leg or foot injury.
Fourth-seed Purdue (22-9) was led by Whitney Bays with 21 points and 13 rebounds.
After Bias left, Purdue closed to 52-46, but the Cowgirls regained control with a 9-4 run and never let Purdue get close.