in the world series against the new york mets, cuellar started game one and was the winning pitcher in a 4–1 victory. he also started game four, but left after seven innings, trailing 1–0. however, the orioles tied the game 1–1, giving cuellar a "no-decision" in a game the mets eventually went on to win, 2–1, in 10 innings. in the next game, the mets completed one of the biggest world series upsets ever, winning the 1969 series four games to one against the heavily favored orioles.