Beaux Barfield, who joined INDYCAR as race director of the Verizon IndyCar Series in January 2012, has resigned to join sanctioning body International Motor Sports Association as its race director for the TUDOR United SportsCar Championship and Continental Tire Challenge.

Barfield will be a member of the new team under the direction of Simon Hodgson, who was named managing director of racing operations. His first race is Sept. 20 at Circuit of the Americas.

As Verizon IndyCar Series race director, Barfield oversaw the on-track product, enforcing rules and procedural issues within the three-steward system. Before joining INDYCAR, Barfield served as race director of the American Le Mans Series since August 2008. He also was a Champ Car steward from 2003-08, during which time he was race director of Champ Car's Atlantic and Trans Am series. He also was chief steward for the USF2000 National Championship from 2001-03.

Said INDYCAR in a statement:

INDYCAR would like to thank Beaux Barfield for his contributions to the Verizon IndyCar Series during the past three seasons and we wish him all the best as he assumes his new position with IMSA. INDYCAR’s on-track product showcases extremely competitive and compelling racing and we look forward to identifying a race director that will take the Verizon IndyCar Series to an even higher level starting in 2015.