Stanford is making a switch at quarterback.
The Cardinal, which debuted at No. 21 in the College Football Playoff rankings, will turn to redshirt freshman K.J. Costello for its game Saturday at No. 25 Washington State, coach David Shaw announced Thursday.
Costello will replace junior Keller Chryst, who has started 13 of the past 14 games dating to October 2016 when he supplanted Ryan Burns after seven games.
Without running back and Heisman Trophy candidate Bryce Love available last week at Oregon State, the Cardinal managed only 15 points with Chryst running the offense.