AMA Pro Racing

2012 - Made three starts in AMA Pro Expert Singles competetion. Best race came at Daytona where he rode his Honda CRF450R to a 13th place finish.

2011 - Mullen contested in select GNC Singles events, earning a best position of 15th-place at the Souther Illinois Center.  Rode with Shevendoah Honda.

2010 - Mullen earned three meain event finishes, with a best finish 10th-place at the Daytona Short Track.  Raced with Miller Motorsports race team.

2009 - Mullen earned a main event finish at the Springfield TT.  Raced with Miller Motorsports race team.