As of today, here are the odds of Arizona winning the Pac-10 Football title along with the other nine teams according to Lucky's Race and Sports Book (and pointed out by John Wilner of the San Jose Mercury News):
USC: 5/11
Cal: 2/1
Oregon: 4/1
UCLA: 9/1
Oregon State: 16/1
Arizona: 25/1
Arizona State: 25/1
Stanford: 40/1
Washington: 70/1
Washington State: 90/1
Does that seem pretty accurate to you?