Affeldt earned the win in Game 7 of the 2014 World Series against his first Major League team the Kansas City Royals. Affeldt was brought in from the bullpen in the 2nd inning and pitched innings of scoreless baseball before giving way to series MVP Madison Bumgarner, who finished the game. In the 2014 postseason, Affeldt pitched in 11 games, allowing just 5 hits and no runs over innings. Affeldt entered games in seven different innings and pitched in nine different innings overall, from the 2nd through the 10th. Through three postseasons with the Giants, Affeldt recorded 22 consecutive scoreless outings, a streak bettered only by Mariano Rivera (23).