Muhannak, winner of his last two starts in England and Ireland, loped along behind the slow early pace in the 1 1/2-mile event, put in a run down the middle of the stretch and held off Church Service for the victory, scoring by a head. He finished in 2:28.24 over Santa Anita's synthetic racing surface. Patrick Smullen rode for trainer Ralph Beckett.
An outsider in the field of nine, Muhannak paid $26.80 to win.
The 4-year-old, Irish-bred son of Chester House had been running in lesser stakes and was making his first start on any surface other than grass. He now has seven wins from 15 lifetime starts.
The favorite, Sixties Icon, had traffic problems while making his move on the turn. By the time jockey Frankie Dettori got him untracked and in the clear, he had lost all chance and finished out of the money.
Dennis Rodman pledges to end trips to North Korea
Senate Democrats to pull all-nighter on climate change