HOUSTON -- Damyean Dotson and Rob Gray scored 22 points each and Houston pulled away from Liberty in the second half to beat the Flames 77-54 on Wednesday night.

Dotson added 10 rebounds for his fourth double-double this season and 10th of his career. Gray turned in his seventh 20-point game this season and 14th in his career.

Wes Van Beck added 13 points and Danrad Knowles 10 for the Cougars (9-2), who have won three straight and four of their last five.

Houston, which led by one at halftime, used a 20-2 run over 6 1/2 minutes to break the game open, 72-52, with four minutes to go. Dotson had nine of his second-half points in the run.

Liberty did not have a field goal over the final 10:58 of the game, scoring only on a pair of free throws.

Ryan Kemrite had 15 points and Lovell Cabbil 14 for the Flames (5-8).