Heading into the final game of the 1966 season vs. USC, UCLA was 2–1 in conference games, 8–1 overall and ranked No. 5 in the country. The Bruins, featuring a "dream backfield" of All-Americans Gary Beban and Mel Farr, lost only one game, at rainy Washington, 16–3, where Huskies' head coach Jim Owens had devoted his entire season to beating Prothro. UCLA had beaten UW the season before, 28–24, with Prothro's trick play, the Z-streak in which a receiver trots towards the sideline like he's going out of the game and then runs a streak pattern unguarded by the inattentive defender. USC was 4–0 in conference and 7–1 overall, having lost to unranked Miami. The Bruins and Trojans played a different number of conference due to uneven scheduling caused by new AAWU members Oregon and Oregon State and schedules made years in advance. It was widely assumed that only losses would be considered and the winner of the 1966 UCLA-USC game would go to the 1967 Rose Bowl. UCLA star quarterback Gary Beban broke his ankle the week before in a win over Stanford, but backup Norman Dow, making his first and only start at quarterback, led UCLA to a 14–7 win. That left USC with a 4–1 conference record (7–2 overall) and No. 5 UCLA with a 3–1 conference record (9–1) overall.