 Dietrich played six seasons with each of the Bandits and Knighthawks.He led the Bandits to the NLL Championship game twice, in 2004 and 2006, and also won the Championship with the Knighthawks in 1997, when he was named Championship game MVP.He was named NLL Goaltender of the Year in both 2005 and 2006, and was the first goaltender to be named NLL MVP in 2006.