CHARLOTTE, N.C. — A deal to loan Mark Martin to Joe Gibbs Racing as a replacement driver for injured Denny Hamlin fell apart Friday, when Michael Waltrip Racing said Martin will fulfill his commitment to its team.

When the dust settled for both teams, Brian Vickers wound up as Hamlin’s replacement driver for at least four races. He was already scheduled to drive Martin’s car for MWR at Martinsville next week and will keep that commitment, with Martin driving Hamlin’s car.