Sandy Koufax sets a National League record for strikeouts in a season: 269
1961 – Sandy Koufax (18-13) fans seven Phils in the course of a 2 – 1 loss to set a National League record for strikeouts in a season: 269. This surpasses Christy Mathewson’s 267 in 1963, which was accomplished in 367 innings pitched, as opposed to Koufax’s remarkable 255. Both runs off Sandy are unearned.