In the split-second Kevin Riley took to decide to run with the football instead of throw it away, Cal's dreams of a No. 1 ranking and undefeated season slipped away. Riley's mistake on the final play of the game spoiled what almost was a spectacular comeback in his first career start as the clock ran out before the second-ranked Golden Bears had a chance to try a game-tying field goal in a 31-28 loss to Oregon State on Saturday.