SALT LAKE CITY (AP) _ Keith Van Horn scored 19 of his 22 points in the first half as No. 5 Utah sent Brigham Young to its school-record 13th straight loss, 85-49 Thursday night.

The 36-point margin was the most lopsided in a BYU-Utah game since the Utes won 62-25 in 1910.

The Utes (16-3, 8-1 Western Athletic Conference) have won five straight over the Cougars (1-18, 0-9).

Leading 43-29 early in the second half, Van Horn's 3-pointer keyed a 9-0 run. Van Horn played just eight minutes in the second half.

Michael Doleac had 16 points and eight rebounds for the Utes. Freshmen Jeff Johnsen, with 12 points, and David Jackson, with 10, each had season highs.

Eric Nielsen led BYU with 15 points before fouling out with 7:15 to play. Justin Weidauer and Jeff Campbell each had eight points for the Cougars.

Utah, which lost at No. 9 New Mexico on Saturday, stayed on top of the WAC Mountain Division. The Utes have won 43 of their last 45 home games.

Van Horn established Utah's dominance early with 13 points as the Utes jumped to a 19-6 lead. Johnsen's steal and breakaway dunk capped the game-opening run.

The Cougars rallied within 24-16 on a 10-foot jumper by John Moala, a BYU football player who joined the basketball team at midseason.

Utah answered with 10 consecutive points. Miller's rebound layup with 2:54 to the half made it 34-16. The Utes led 39-25 at halftime.