The Big 12 Conference approved a three-year contract extension for commissioner Brett Yormark on Tuesday, multiple outlets reported Tuesday.ESPN first reported that the board of directors had extended his original five-year deal, which was set to expire in 2027.Yormark, 58, succeeded Bob Bowlsby in 2022. He helped the Big 12 navigate a national realignment of the conference landscape and boost its membership to coincide with the departures of Texas and Oklahoma to the Southeastern Conference.