By 10ish tonight, Spokane and Arizona will have determined the early pecking order in the AFL West Division.

Both teams are undefeated entering the 7 p.m. showdown at the Arena, the Shock's first home game of the season. The Rattlers were the best team in the AFL last year, winning the title game by 18 points over Philadelphia, and they've assembled another quality roster. 

Spokane and Utah are considered Arizona's primary challengers, which adds to the importance of tonight's game. As Spokane coach Andy Olson points out in my game preview, home games against division rivals are virtually must-wins.

Update: Arizona may be without two WRs.