Mark is Global Racing Group’s Chief Engineer and began his professional racing career in 1978. He has worked for racing legends like Dan Gurney, Frank Arciero, John Menard and Dick Simon, as well as drivers that include Sarah Fisher, Robby Gordon, Robbie Buhl, Roberto Moreno, Robbie Pecorari, Pedro Chaves, Airton Dare, Arie Luyendyk, Mike Groff, Fabrizio Barbazza, Felipe Giaffone, Vincenzo Sospiri, Wally Dallenbach Jr.
In 2014 he was Race Engineer for Lawson Aschenbach in the Pirelli World Challenge and was Chief Mechanic for Sage Karam in the 2014 Indy 500, finishing in 9th place.
Mark has engineered drivers to three Indy Lights titles (1986-Barbazza, 1989-Groff, 1992-Buhl) and three World Challenge GTS titles (2013-2014 Aschenbach, 2015 Michael Cooper).
Mark was Chief Engineer for rookie Robbie Pecorari in Indy Lights during 2007 and guided him to victory at Nashville Super Speedway. As a Chief Mechanic at the 1997 Indy 500, Mark won the Snap-On Top Wrench Award and the prestigious Clint Brawner Award for Mechanical Excellence after engineering rookie Vincenzo Sospiri to a qualifying slot on the front row of the grid next to Tony Stewart and Arie Luyendyk.
As well as winning six championships, Mark was Race Engineer for Sarah Fisher when she became the first woman to secure pole position for an Indy Car race at Kentucky in 2002.