Steve Pope, Associated Press
Florida State's Jacinta Monroe, left, and Oklahoma State's Shaunte Smith battle for the ball.

DES MOINES, Iowa — Andrea Riley sank a free throw with 0.7 seconds left in overtime to give Oklahoma State a 73-72 victory over a gritty Florida State team Monday night in the second round of the New Orleans Regional.

The back-and-forth game appeared headed to a second overtime when Riley was trapped 18 feet from the basket with time about to run out. She went up for what would have been an awkward shot and official Teresa Dahlem whistled a foul on Florida State's Shante Williams just as the buzzer sounded.

The officials then checked the TV monitor and put 0.7 seconds on the clock. Riley, who had missed two free throws on her previous trip to the line, bricked the first one but nailed the second, then intercepted Florida State's long inbounds pass, allowing the Cowgirls to escape.

So, two years after going 0-16 in the Big 12, Oklahoma State is in the round of 16. The third-seeded Cowgirls (27-7) will play No. 2 seed LSU in the regional semifinals next Saturday.

Danielle Green led Oklahoma State with 23 points and Riley scored 21, though she shot just 8-for-25.

Florida State (19-14), the 11th seed, surprised many by even getting into the tournament, but the Seminoles upset sixth-seeded Ohio State in the first round, then gave Oklahoma State all it could handle.

Mara Freshour led the Seminoles with 20 points, including four 3-pointers. Williams scored 16 of her 19 after halftime and Jacinta Monroe added 14 points and 13 rebounds.

LSU 68, MARIST 49: At Baton Rouge, La., Sylvia Fowles had 19 points and 13 rebounds, and Erica White had 15 points to help LSU (29-5) end the Red Foxes' 22-game winning streak.

Fowles, playing her final game on campus, also became the leading rebounder in the history of the Southeastern Conference with 1,527.

Julianne Viani led seventh-seeded Marist (32-3) with 21 points, hitting 5 3-pointers.

SPOKANE REGIONAL

PITTSBURGH 67, BAYLOR 59: At Albuquerque, N.M., Shavonte Zellous scored 19 points and grabbed a key late rebound to lead the No. 6 seed Panthers.

Pitt (24-10) is in a regional semifinal for the first time in school history.

STANFORD 88, UTEP 54: At Stanford, Calif., Candice Wiggins scored a school-record tying 44 points in her final game at Maples Pavilion to lead second-seeded Stanford past UTEP.

It was the third-most points scored in women's tournament history and the most since Sheryl Swoopes had 47 in the 1993 championship game for Texas Tech. Lorri Bauman of Drake has the all-time record of 50, set in 1982 against Maryland.

VANDERBILT 64, WEST VIRGINIA 46: At Albuquerque, N.M., Christina Wirth scored 21 points and reserve Jessica Mooney added 11 to help Vanderbilt beat West Virginia.

The fourth-seeded Commodores (25-8) advanced to the regional semifinals in Spokane, Wash., where they'll meet the winner of Tuesday's game between Nebraska and Maryland.

GREENSBORO REGIONAL

GEORGE WASHINGTON 55, CALIFORNIA 53: At Stanford, Calif., Sarah-Jo Lawrence rebounded a missed shot and beat the buzzer with a shot from the baseline to give sixth-seeded George Washington a comeback victory over No. 3 California.

The winning shot was set up when Natasha Vital traveled while trying to call timeout for Cal (27-7) with less than 6 seconds remaining. Lawrence hit the game-tying shot moments earlier.

George Washington (27-6) advances to face Rutgers in the regional semifinal.

RUTGERS 69, IOWA STATE 58: At Des Moines, Iowa, Kia Vaughn scored 23 points to lead four players in double figures and Rutgers advanced to the regional semifinals for the fourth straight season by beating Iowa State.

The Scarlet Knights, who leaned on its stingy defense all season, shot over 50 percent for the second straight NCAA tournament game.

Epiphanny Prince scored 17 points, Matee Ajavon had 16 and Essence Carson added 10 for second-seeded Rutgers (26-6).

OKLAHOMA CITY REGIONAL

TEXAS A&M 63, HARTFORD 39: At Baton Rouge, La., Danielle Gant scored 21 points on 9-of-11 shooting to lead Texas A&M to a dominant victory over 10th-seeded Hartford.

Morenike Atunrase, playing in her home state of Louisiana, added 13 points to help the Aggies (28-7) win their 11th straight game. Texas A&M will play the winner of Tuesday's game between Duke and Arizona State.