John and Mark Hirschbeck Autographed MLB AL and NL Umpires OAL Baseball JSA COA

Description

John Francis Hirschbeck is a former umpire for Major League Baseball. He worked in the American League from 1984 to 1999 and worked in both leagues from 2000 to 2016. He was a crew chief at the time of his retirement, and wore uniform number 17 throughout his career.

Mark Hirschbeck is a former umpire in Major League Baseball who worked in the National League from 1987 to 1999, and both Major Leagues from 2000 until his retirement in 2003.