Big 12 quarterback play full of struggles and surprises

Iowa State quarterback Brock Purdy (15) runs as he looks to pass against Baylor during the first half of an NCAA college football game, Saturday, Sept. 25, 2021, in Waco, Texas. (AP Photo/Jim Cowsert)

Oklahoma quarterback Spencer Rattler (7) passes against West Virginia during the second half of an NCAA college football game in Norman, Okla., Saturday, Sept. 25, 2021. (AP Photo/Alonzo Adams)

Texas quarterback Casey Thompson (11) lunges into the end zone for a touchdown against Texas Tech during the first half of an NCAA college football game on Saturday, Sept. 25, 2021, in Austin, Texas. (AP Photo/Chuck Burton)