Washington Huskies junior running back Chris Polk underwent arthroscopic knee surgery Thursday morning. He's expected to be sidelined the next couple of weeks.

Huskies head coach Steve Sarkisian said Polk tweaked his knee in practice on Wednesday, which led to the procedure to repair the meniscus.

"It's not serious, but I just didn't want it to linger," Sarkisian said.

In 2010, Polk rushed for 1,415 yards, second most in Husky history. That was preceded by 1,113 rushing yards as a freshman, which makes him the third Husky back in history to rush for 1,000 yards in two different seasons (joining Greg Lewis and Napoleon Kaufman).

Polk's 2,561 career yards is already No. 6 on the UW career rushing list.

With Polk possibly out for the September 3 opener against Eastern Washington, the running back duties would likely fall on sophomore Jesse Callier, who rushed for 433 yards last season.