The 2016 Major League Baseball World Series, which gets underway on Tuesday evening in Cleveland, Ohio, will feature the Chicago Cubs and the Cleveland Indians.
Justine Siegal threw batting practice at the Cleveland Indians' spring training facility in Goodyear, Arizona, marking the first time a woman has ever performed this task.
She will pitch batting practice again today, this time for the Oakland A's.
This isn't the first time the 36-year old has been a baseball gender pioneer -- in 2009 Siegal became the first woman to coach first base for a men's pr