The Kansas City Royals are set to make history with their World Series roster, as 20-year old Raul Mondesi Jr. has replaced Terrance Gore on the roster. Mondesi, who has never played a game above Double-A, would be the first player in Major League history to make his debut in a World Series game.
The loss of Gore, who only appeared in two playoff games this year—pinch running in both—means the Royals have a little less speed off their bench. But the move doesn't hurt them at the plate in the slightest, as in 28 regular and postseason games he's appeared in, Gore has a batting average of .000. He is used almost exclusively to run, and Mondesi provides a more well-rounded game off the bench.
Well, at least he does in theory—he has ever played a game above Double-A, and hasn't exactly put up gaudy numbers in the lower minors, either. It seems like he will be used in a role quite similar to what Gore's was, and so his inclusion may not be all that noteworthy, aside from the potential record-breaking nature of his debut. Mondesi has 71 steals in 93 attempts in the minors, a 76.3% success rate.
That is the only change the Royals made from their ALCS roster, which features, like their New York counterparts, 11 pitchers and 14 position players.