When Jack Leiter made his major-league debut on April 18, it was the first time the sons of two major-league brothers played in the majors. Jack, a pitcher for the Texas Rangers, is the son of Al Leiter, a 19-year veteran pitcher in the majors from 1987 to 2005.
Al’s brother is Mark Leiter, who pitched in the majors from 1990 to 2001. Mark’s son is Mark Jr., who is currently a pitcher for the Chicago Cubs.
Jack was the first-round pick of the Rangers in the 2021 MLB Draft.