Jackson Arnold shows poise in win over BYU, replacing injured Dillon Gabrielby:George Stoia•11/18/23•GeorgeStoiaRead In AppNov 18, 2023; Provo, Utah, USA; Oklahoma Sooners quarterback Jackson Arnold (10) calls a play against the Brigham Young Cougars in the fourth quarter at LaVell Edwards Stadium. Mandatory Credit: Rob Gray-USA TODAY Sports OU freshman quarterback Jackson Arnold showed poise in a close win over BYU after Dillon Gabriel's injury.