From 2005 to 2007, Hartley was a pitching coach for the independent Reno Silver Sox. From 2008 to 2010, he was the head coach for the Heidenheim Heideköpfe a German first league team. Hartley lead the team to become the 2009 German National Champions.
Hartley served as a pitching coach for the independent Reno Silver Sox from 2005 to 2007 and as the head coach for the Heidenheim Heideköpfe in the German first league from 2008 to 2010. The team won the 2009 German National Championship under his leadership.