Aly Khalifa scored 17 points and blocked a potential go-ahead layup with 16 seconds left, helping No. 18 BYU hold off UCF 63-58 on Saturday for its first Big 12 win since joining the conference. Trevin Knell had 14 points for BYU (13-3, 1-2), and Spencer Johnson finished with 12. Knell made four 3-pointers and Khalifa had three as the Cougars went 9 for 26 from deep.