The star power in the courtside seats — Sonics legends Gary Payton and Shawn Kemp — overshadowed the action on the Alaska Airlines Arena floor Thursday.

In homage to their namesakes, senior forward Shawn Kemp Jr. flushed an alley-oop dunk for Washington and Oregon State junior guard Gary Payton II terrorized the Huskies on the defensive end.

The second-generation Sonics had their moments, but Andrew Andrews and Mike Anderson sank a pair of clutch three-pointers in the final minutes that allowed the Washington men’s basketball team to secure a 56-43 victory and snap its four-game losing streak.

Without two injured players and debuting a retooled lineup, the Huskies (12-4, 1-3 Pac-12) played their best game in three weeks for their first Pac-12 victory.

“We finished the game,” said coach Lorenzo Romar, alluding to the previous four games when Washington failed to hold onto leads down the stretch.

This time, the Huskies broke open a close game with a weapon that had been missing from its arsenal — the three-pointer.

Washington led 43-37 with 4:12 remaining when Andrews drained a three-pointer. At the other end, Payton II blew past a defender on the perimeter and sailed over Andrews for a highlight dunk that cut UW’s lead to seven at 46-39.

After Daniel Gomis’ dunk pulled Oregon State (11-5, 2-2) to five down at 46-41, the crowd of 6,663 began to grumble, perhaps believing Washington was on the verge of another late-game collapse.

However, Anderson converted a three-pointer at the 2:51 mark and the Huskies closed out the game with a 10-2 run.

“It was just me being confident with my shot,” said Anderson, who finished with 11 points, including three three-pointers. He also had four assists, four rebounds and four steals.

“He’s so unselfish,” Romar said. “He’s such a team guy, he’s thinking about his team so much that he forgets about himself sometimes. I tell him in order to really be a team he can’t forget himself because he’s a big part of what we do.”

Andrews came off the bench for the first time this season and tallied 12 points, including two three-pointers. Romar said the junior co-captain didn’t start because of a “miscommunication in shoot-around.” Andrews is expected to return to the starting lineup Sunday against Oregon.

The Huskies also received 12 points and 15 rebounds from Robert Upshaw. The sophomore center finished with six blocks and moved past Chris Welp and David Dixon into first place on Washington’s season blocks list. The old mark was 67. Upshaw has 72 blocks.

“It doesn’t mean anything if we don’t win these games,” Upshaw said. “What I do is just helping us get to where we want to be.”

The Huskies were without junior forward Jernard Jarreau, who is out four to six weeks due to a knee injury, and sophomore guard Darin Johnson, out with a right quadriceps strain.

NOTES

• Jarreau will undergo arthroscopic surgery on his right knee Friday. The 6-10 junior forward practiced two days this week, but Romar said he suffered a setback Tuesday.

• In his UW starting debut Quevyn Winters finished with two points, four rebounds and two assists.

• Former Sonics Sam Perkins and Jack Sikma also were in attendance.

• Oregon State backup junior forward Victor Robbins has been suspended 10 games for a violation of an athletic department policy.

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