Baylor quarterback Jarrett Stidham prepares to throw during the first quarter of an NCAA college football game against Oklahoma State in Stillwater, Okla., Saturday, Nov. 21, 2015. (AP Photo/Sue Ogrocki)

Baylor will be without freshman quarterback Jarrett Stidham for the rest of the regular season, the school confirmed Wednesday to the Dallas Morning News.

Stidham, who filled in as starter for the last three games for the injured Seth Russell, suffered a “broken bone in the back of his ankle” in the Bears’ win over Oklahoma State over the weekend. He was injured just before halftime and was replaced by sophomore third-stringer Chris Johnson, who led the team to a 45-35 win.

Chip Brown of Scout first reported that Stidham would miss the rest of the season. According to coach Art Briles, Stidham could be back for Baylor's bowl game.

Stidham has played in all 10 games for Baylor this season as a true freshman, throwing for 1,265 yards and 12 touchdowns. He also added 70 yards and two scores rushing this season.

Stidham was a Top 100 recruit out of Stephenville, Texas. He beat out Johnson for the No. 2 quarterback role in preseason practice.

In relief of Stidham, Johnson threw for 138 yards and two touchdowns and added a score on the ground in the first significant action of his career. Baylor head coach Art Briles said earlier this week that the team was practicing with the expectation that Johnson would make his first career start on Friday night against No. 19 TCU.

Baylor (9-1, 6-1 Big 12), now No. 7 in the College Football Playoff rankings, still has a chance to win the Big 12. The Bears must beat TCU and Texas and also need help from No. 11 Oklahoma State (10-1, 7-1) in its game against No. 3 Oklahoma on Saturday.

If the Cowboys beat the Sooners and Baylor wins out, the Bears would finish with identical 8-1 conference records. However, because of Baylor’s win over the Cowboys last weekend, the Bears have the head-to-head edge and would win the league crown.

For more Baylor news, visit SicEmSports.com.

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Sam Cooper is a contributor for the Yahoo Sports blogs. Have a tip? Email him or follow him on Twitter!

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