The Padres lost 5-1, but it was scoreless when Weathers came in — a reasonably high-pressure situation, compared to other players who made their debuts in the postseason.In 1885, outfielder Bug Holliday debuted for the Chicago White Stockings in the World Series — but that version of the postseason isn't recognized by Major League Baseball as part of World Series history, which began in 1903.In 2006, Oakland infielder Mark Kiger appeared twice in the AL Championship Series as a defensive replacement.
He never came to bat, and he never did appear in a regular-season game. In 2015, Adalberto Mondesi made his debut for Kansas City in Game 3 of the World Series.