Mark Lyons scored 20 points as No. 8 Arizona beat host Washington State 79-65 in a men's Pac-12 basketball game.

PULLMAN — Mark Lyons scored 20 points as No. 8 Arizona beat Washington State 79-65 Saturday, the Wildcats’ fifth consecutive victory over the Cougars.

Solomon Hill added 18 points for Arizona (19-2 overall, 7-2 Pac-12), which swept the Washington schools on the road. The Wildcats beat Washington 57-53 Thursday night.

Brock Motum and DaVonte Lacy each scored 15 points to lead Washington State (11-11, 2-7), which has lost four of its last five games.

WSU coach Ken Bone said he isn’t about to panic.

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“I’d feel different if we were getting blown out,” Bone said. “Our guys show up every game and bust their tails.”

WSU’s Mike Ladd picked up his second foul three minutes into the game and went to the bench. Arizona responded with an 11-2 run for an 18-9 lead.

Arizona’s Kevin Parrom was ejected from the game with 10:42 left in the first half for a flagrant foul on Lacy, who is from Tacoma.

Wildcats coach Sean Miller said he was disappointed in Parrom but added he needed to watch video of the foul before deciding on discipline for the player.

“If in fact he committed the foul, he embarrassed himself, our basketball program and his family,” Miller said. “Kevin is a senior and he knows better.”

Hill made 6 of 8 three-point attempts in the first half, including a half-court bank shot that gave Arizona a 40-26 halftime lead.

“I hit my first two shots and every time I shot, I thought I was going to make it,” Hill said. “So when I got space, I let it go.”

ARIZONA (19-2) — Ashley 4-5 2-3 10, Hill 6-11 0-0 18, Tarczewski 3-5 4-4 10, Lyons 6-13 6-7 20, Johnson 2-5 2-2 6, York 1-4 0-0 3, Parrom 1-2 0-0 2, Mayes 1-4 0-0 3, Chol 1-1 0-0 2, Jerrett 2-7 0-0 5. Totals 27-57 14-16 79.

WASHINGTON ST. (11-11) — Motum 6-12 3-4 15, Shelton 3-6 4-4 13, Ladd 1-5 0-0 2, Lacy 3-9 8-10 15, Woolridge 5-9 2-2 14, Leavitt 0-0 2-2 2, DiIorio 0-1 0-0 0, Longrus 1-3 0-0 2, Kernich-Drew 1-4 0-0 2. Totals 20-49 19-22 65.

Halftime — Arizona 40-26. Three-point goals — Arizona 11-30 (Hill 6-10, Lyons 2-7, Jerrett 1-3, York 1-3, Mayes 1-4, Parrom 0-1, Johnson 0-2), Washington St. 6-19 (Shelton 3-6, Woolridge 2-3, Lacy 1-4, Ladd 0-1, Kernich-Drew 0-2, Motum 0-3). Fouled out — Ashley, Motum. Rebounds — Arizona 29 (Ashley, Jerrett 5), Washington St. 32 (Shelton 10). Assists — Arizona 13 (Johnson 5), Washington St. 10 (Lacy, Woolridge 3). Total fouls — Arizona 21, Washington St. 17. Technical — Parrom. A — 6,002.