Career
Signed as an amateur free agent by the Saint Louis Cardinals in 1981, Hartley would make his Major League Baseball debut with the Los Angeles Dodgers on September 10, 1989, and appear in his final game on September 24, 1995. In 1994, he pitched in Japan for the Chiba Lotte Marines. From 2005-2007, Hartley was a pitching coach for the independent Reno Silver Sox.
From 2008-2010, he was the head coach for the Heidenheim Heideköpfe a German first league team
Mike lead the team to become the 2009 German National Champions. In 2010, Heidekoepfe finished 2nd in the Final Four European Championship.
In 2012 he became the head coach of Grosseto Baseball in the Italian Baseball League.
