The fifth-seeded Cowgirls (15-7-0, 8-5-0) earned the automatic bid into the NCAA tournament, which starts Friday. It's the first time they have won the Big 12 tournament since 2003. The Aggies won in in 2004 and '05 and were the runnerup in '07.
Oklahoma State controlled the tempo early, because A&M did not get much offense generated before halftime. The Aggies, who had outshot their opponents by a 22-10 margin in all games this year, were outshot 6-3 by the Cowgirls in the first half.
"I thought we were real unlucky not to be up one or two goals at halftime," OSU coach Colin Carmichael said. "And we were fortunate that it didn't come back to bite us.
"You're not going to keep a good team like A&M from getting opportunities. But AD (Franch) makes coaches look good, doesn't she?"
A&M coach G. Guerrieri said his team usually can win if it gets at least eight shots on goal. A&M had seven for the game, but six in the second half.
"I think their goalkeeper was great," Guerrieri said. "They made big-time saves.
"And we have to play for 90 minutes. I think we played for 40. Oklahoma State did a great job of battling and scraping to keep us off the scoreboard."