Mark Miles, CEO of Hulman & Company, parent of INDYCAR and Indianapolis Motor Speedway, announced that INDYCAR president of Competition and Operations Derrick Walker has decided to leave the company effective Aug. 31 in order to pursue other professional opportunities. A search for his replacement is under way.

Walker has made several important contributions that advanced INDYCAR as a sanctioning body. During his tenure, he greatly assisted in securing Boston as a new event on the 2016 schedule, successfully introduced the Angie’s List Grand Prix of Indianapolis in 2014, spearheaded additional investment to improve technology in Race Control and led innovation of the new Indy car aero kits. His focus on continuous safety advancement resulted in changes to the Indy car underwing, making the cars more stable and strengthening sidepods, further protecting drivers.

"We have benefited from Derrick’s extensive racing experience, his tireless effort and his passion for INDYCAR, and he will be missed," said Miles. "We appreciate the thoughtful way Derrick has planned his transition and wish him well in his future endeavors."

Said Walker: "I have appreciated the opportunity to work closely with the team owners, drivers and the team at INDYCAR. After two and a half racing seasons, I believe the timing is right to move on to other opportunities."