Stewart-Haas Racing and Roush Fenway Racing have reorganized their competition departments.
SHR named Chad Johnston crew chief for Tony Stewart. Johnston was crew chief for Martin Truex Jr., and will replace Steve Addington.
The team also named Greg Zipadelli vice president of competition responsible for managing all four Sprint Cup teams. Matt Borland was named vice president of engineering.
Daniel Knost was promoted from race engineer on the No. 39 team to crew chief for the new No. 41 team for Kurt Busch.
Roush-Fenway, meanwhile, reunited Nationwide Series crew chief Mike Kelley with Ricky Stenhouse Jr. in the Sprint Cup Series.
Chad Norris will work with Trevor Bayne in the Nationwide Series, and Scott Graves will crew chief Chris Buescher. Seth Barbour was named crew chief for Ryan Reed.