Add tailback Brandon Yakaboski to revolving door that is the Huskies' injury list.

Yakaboski injured a knee at Tuesday practice and is probably out for Saturday’s game at Arizona.

In his absence -- and that former starter Chris Polk and his replacement David Freeman -- the starting job will go with Brandon Johnson or Willie Griffin, and the idea of using true freshman Terrance Dailey will rise a bit. Dailey himself had missed some time this week, but that was explained as illness and nothing that should affect his availability if needed in Tucson.

Leading receiver D'Andre Goodwin also is practicing, but doubtful for Saturday with a rib injury.

And the UW career of senior CB Byron Davenport is probably over, as he will undergo knee surgery later this month.

Wondering where the good news is? That's elsewhere on the defensive side, where coordinator Ed Donatell said this afternoon that middle linebacker Donald Butler (concussion) is working and likely to play Saturday, while safety Victor Aiyewa (groin) also is working and could make his season debut Saturday.

1 Southern California (1) 2-1, 1-1. Off game or overrated?
2 Oregon (2) 4-1, 2-0. Pac-10 leader with 47.4 points per game.
3 Arizona State (3) 2-2, 1-0. Ranked here on expectations, but reality near.
4 California (4) 3-1, 1-1. Tedford reopens quarterback competition.
5 Oregon State (7) 2-2, 1-1. Nothing fluky about win over USC.
6 Arizona (5) 3-1, 1-0. Still hard to tell until they play someone.
7 Stanford (6) 3-2, 2-1. Halfway to bowl eligibility in Harbaugh’s second season.
8 UCLA (8) 1-3, 0-1. Neuheisel is 67-33 after 100th game as coach.
9 Washington (9) 0-4, 0-2. Only BCS team without a win … or a sack.
10 Washington State (10) 1-4, 0-2. Outscored 213-47 vs. Bowl Subdivision teams.