Iowa State running back David Montgomery tries to break a tackle by Drake linebacker Connor Willis, right, during the first half of an NCAA college football game, Saturday, Dec. 1, 2018, in Ames, Iowa. (AP Photo/Charlie Neibergall)

Drake tight end Tom Pugh catches a 2-yard touchdown pass over Iowa State defensive back Lawrence White, left, during the first half of an NCAA college football game, Saturday, Dec. 1, 2018, in Ames, Iowa. (AP Photo/Charlie Neibergall)

Iowa State defensive end Matt Leo (89) looks to recover a blocked punt in front of Drake punter Ross Kennedy (10) during the first half of an NCAA college football game, Saturday, Dec. 1, 2018, in Ames, Iowa. (AP Photo/Charlie Neibergall)

Iowa State quarterback Brock Purdy (15) celebrates with teammate Julian Good-Jones (51) after scoring on an 11-yard touchdown run during the first half of an NCAA college football game against Drake, Saturday, Dec. 1, 2018, in Ames, Iowa. Iowa State won 27-24. (AP Photo/Charlie Neibergall)

Iowa State quarterback Brock Purdy runs from Drake defensive back Cooper Christiano, left, during the first half of an NCAA college football game, Saturday, Dec. 1, 2018, in Ames, Iowa. (AP Photo/Charlie Neibergall)

Iowa State wide receiver Hakeem Butler tries to make a reception in front of Drake defensive back Will Warner, left, during the first half of an NCAA college football game, Saturday, Dec. 1, 2018, in Ames, Iowa. The pass fell incomplete. (AP Photo/Charlie Neibergall)