SPOKANE, Wash. (AP) - Rui Hachimura scored 19 points, Josh Perkins added 16, and No. 20 Gonzaga beat Pacific 81-48 on Thursday night, winning its 22nd consecutive West Coast Conference opener.

Zach Norvell Jr. scored 13 points for Gonzaga (11-3, 1-0 West Coast), which has beaten Pacific 11 consecutive times.

Jahlil Tripp scored nine points to lead Pacific (5-9, 0-1), which has lost five games in a row.

Pacific was undone by 33 percent shooting and lost the rebound battle 46-32 against the taller Zags.

Pacific scored the first six points of the game, but Gonzaga replied with a 13-2 run to take the lead.

Perkins scored 11 points in the first 9 minutes as Gonzaga pushed the lead to 20-10.

Both teams had trouble shooting in the first half. Gonzaga fell into a 2-of-12 shooting slump, but the Tigers could not make up much ground and still trailed 24-15.

Gonzaga led 31-21 at halftime, after holding Pacific to 29 percent shooting and no 3-pointers. The Zags shot just 38 percent in the first.

The teams traded baskets early in the second half until the Zags went on a 17-4 run for a 61-39 lead. The Zags hit four consecutive 3-pointers, by Perkins, Norvell, Corey Kispert and Killian Tillie, during the run.

The Tigers did not threaten again.

Gonzaga coach Mark Few's career record in WCC games is 244-29.