HOUSTON (AP) -- Rob Gray had 19 points and 11 assists, and No. 23 Houston used a huge first half en route to a 109-58 victory over ECU on Sunday.

Armoni Brooks added 21 points on 7-of-9 shooting from 3-point range for the Cougars (22-6, 12-4 American), who shot 67 percent from the field. Corey Davis Jr. chipped in 16 points, six rebounds and seven assists.

Houston had runs of 22-0 and 11-0, then closed the half on a 14-1 run to build a 62-13 lead. The Cougars were 23 of 31 from the floor in the half, including 12 of 16 from behind the arc. Houston started 13 of 15 from the field, including 7 of 8 on 3-pointers and hit 10 straight field goals at one point.

Gray had 17 points and 10 assists in the first half and hit all five from the floor, including all three from behind the arc. Brooks had 18 points at the half, and hit his first six from behind the arc. The 62 first-half points were the most Houston has scored in a half since scoring 62 in the second half against Florida Tech on Nov. 22, 2005.

The Cougars' lead grew as large as 61 in the second half. Houston finished with 18 3-pointers, which tied a conference record Houston set against Tulsa on Jan. 11.

ECU (10-17, 4-12), which has lost three straight, shot 22 percent and committed 10 turnovers in the first half. The Pirates were outrebounded 22-6 in the first half.

B.J. Tyson finished with 24 points, Shawn Williams added 14 and Isaac Fleming scored 13 for the Pirates, who shot 37 percent for the game.