Three-time Cup champion Tony Stewart will miss the rest of the season because of broken bones in his right leg. He will be replaced in the Stewart-Hass No. 14 car by Austin Dillon and Mark Martin.

Stewart is expected to return in time for preseason testing in January 2014.

Martin was granted his release Monday from Michael Waltrip Racing to join SHS. He will drive the No. 14 this weekend at Bristol and in 11 other races.

Dillon will race Oct. 20 at Talladega. Dillon filled in for Stewart on Sunday at Michigan and finished 14th.

Brian Vickers will now drive the No. 55 Toyota for MWR in 12 of the final 13 races. He was originally scheduled to drive just three more times. Michael Waltrip will race the No. 55 at Talladega as previously scheduled.