Dr. Henry Bock will retire as senior director of medical services for the Indianapolis Motor Speedway and the Indy Racing League, effective Jan. 1, 2007.

Bock has served in that capacity at IMS since 1982 and for the IRL since it started competition in 1996. He will remain at IMS and the IRL as a medical and safety advisor. (MORE)

No, he's not being replaced by Dr Jerry Punch.