During the Twins 1965 World Series season, Allison had a down year, hitting only .233 in 135 games, and continued his poor production versus the Los Angeles Dodgers, reaching base only 4 times (two walks, a double, and a home run) and striking out 9 times in 16 at-bats, the last of which was against Sandy Koufax for the final out in Game 7 of the 1965 World Series. However, he had a memorable Game 2 of the Series. His bases-loaded double against Koufax and a great backhand diving catch of a Jim Lefebvre fly ball were the main contributors to the Twins victory. This catch has been called the best catch in Twins history and one of the most spectacular catches seen in World Series history. Allison's slide at the plate continued into the 1966 season and he played in only 70 games and hit .233. However, he returned in a big way in 1967, hitting .258 with 24 home runs with 75 RBI in a year which the league batting average was only .236.