A person familiar with the decision tells The Associated Press that the seven-man umpire crew for the World Series will include a rare four first-timers.
In several instances, the newcomers were boosted by their strong results on replay challenges this season.
The person spoke under condition of anonymity because Major League Baseball hadn't yet announced the umpires.
Hunter Wendelstedt, Eric Cooper, Jim Reynolds and Jerry Meals will work their first World Series. Wendelstedt had just two of his calls reversed on video reviews this year, and Cooper only three.
Jeff Kellogg will be the crew chief and call his fifth World Series, starting Tuesday night when Kansas City hosts San Francisco. Ted Barrett and Jeff Nelson will work for the third time.