TUCSON, Arizona (Ticker) -- Mike Williams ended any hopes Arizona had of finishing a difficult season on a high note.
Williams carried 40 times for a career-high 162 yards and four touchdowns - two in a 2:03 span of the fourth quarter - as Arizona State posted a 34-20 victory over Arizona in the 76th meeting between the Grand Canyon State rivals.
While Arizona State (8-5, 5-3), which finished third in the Pac-10 Conference, can look forward to a bowl appearance, the loss saddled Arizona (4-8, 1-7) with its first last-place finish since joining the Pac-10 in 1978.
The Wildcats, whose season included a player mutiny two weeks ago, finished with their worst record since going 3-7 in 1969. They also suffered their 11th straight conference loss at home.
On November 13, 40 Arizona players went to the university president complaining of coach John Mackovic's abuse style. The next day, Mackovic broke down during an emotional press conference during which he apologized.
The Wildcats responded by beating California, 52-41, to snap a six-game losing streak. Despite the poor record and off-the-field problems, Arizona athletic director Richard Livengood insisted Mackovic's job is not in jeopardy.
The Wildcats were ready for their archrivals and took a 20-13 lead on Jason Johnson's 10-yard TD pass to Biren Ealy with 7:51 left in the third quarter.
But Arizona could not stop Williams, who scored on a four-yard TD run to tie it with 1:55 remaining in the third period, then added TDs of eight and four yards in the final quarter.
Arizona State put together scoring drives of 94, 84 and 85 yards.
Andrew Walter completed 25-of-35 passes for 295 yards for the Sun Devils, who got their other points on a pair of field goals by Mike Barth.
Jason Johnson completed 17-of-31 passes for 260 yards, but threw three interceptions. The Wildcats also lost a pair of fumbles and could not overcome the five turnovers.
Arizona took a 13-10 halftime lead on TD runs of one and six yards by Beau Carr, but should have had a bigger advantage as the Wildcats twice turned the ball over inside the Arizona State 20.
Each time, linebacker Mason Unck came up with the big play to turn back the Wildcats. He recovered a fumble at the Arizona State 16 in the first quarter, then picked off Johnson on the first play of the second quarter after Ray Wells' interception return gave Arizona a first-and-goal at the 2.
One bright spot for Arizona was wide receiver Bobby Wade, he caught six passes for 109 yards to set a single-season school receptions record with 93.
The Sun Devils tied in on Barth's 32-yard field goal with 10:38 to go in the third quarter before the Wildcats took their last lead on Johnson's TD toss to Ealy.
Arizona State took control of the Territorial Cup, which is presented to the winner, but Arizona still leads the all-time series, 43-32-1.