The title is the sixth regular season championship in school history to go along with four tournament titles, while the 10 total crowns are the most in league history. The defending conference champions, the Sooners have won back-to-back league titles for the second time in school history, also doing so in 1999 and 2000.
In addition to the Big 12 championship, the win kept the Bedlam title in OU's hands, which it has been every year since the series against the Cowgirls (30-25, 6-11) was officially introduced in 2001.
The game was played in front of an announced attendance of 1,597. It was the largest regular season crowd in stadium history and the second largest overall, trailing the 1,645 that saw the Sooners play against DePaul in the Super Regionals on May 27, 2007.
Oklahoma's senior class of Michelle Gascoigne, Keilani Ricketts, Jessica Shults and Brianna Turang all played a role in the win and were recognized afterward in a postgame ceremony.
Gascoigne got the start and improved her record to 17-3 as she combined with Ricketts to throw the team's 25th shutout of the season. Gascoigne struck out eight and allowed just four hits with no walks, while Ricketts came on in relief and allowed one hit in a scoreless inning of work.
Turang did her part with an RBI single and run scored, while Shults fittingly caught the final out of the game with a terrific diving catch of a popped up foul ball behind home plate.
Oklahoma got on the board in the first inning to run their record to 27-0 when doing so.
Sophomore Lauren Chamberlain led off with a single up the middle and was sacrificed to second by fellow sophomore Georgia Casey. Sophomore Shelby Pendley then launched a shot over the head of OSU left fielder Amy Graham to plate Chamberlain.
Oklahoma State was held hitless through the first three innings by Gascoigne as the senior opened the game with four straight strikeouts. Gascoigne enjoyed three 1-2-3 innings over the course of the game, doing so in the first, third and fifth innings.
The Sooners added to their lead with a pair of runs in the fourth.
With one out, junior Destinee Martinez doubled to right center and junior pinch hitter Javen Henson walked. A fielder's choice erased Martinez at third, but Chamberlain picked up the team with a two-run double to left field.
The fourth and final run came for the Sooners when Turang singled up the middle in the sixth to drive home Henson, who had hit a two-out double.
Oklahoma closes out the regular season on Sunday with a game in Stillwater against Oklahoma State. First pitch is set for 1 p.m. A win would give the Sooners a 15-2 (.882) record in Big 12 play, which would be the third-best league winning percentage in school history.
In addition, OU will find out its postseason fate on Sunday night. The 2013 NCAA Division I Softball Championship bracket will be announced at 9 p.m. on ESPNU.