OZZIE GUILLEN AUTOGRAPHEDED GAME USED JERSEY. His game used Marlins jersey which is signed by Ozzie Guillen. Ozzie managed the Marlins in 2012. John 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. In 2000, Hirschbeck was elected as the first president of the newly certified World Umpires Association, a position he held until 2009. Authentication: Umpire John Hirschbeck's Letter of Authenticity.