Fox Sports will use a rotation of drivers, including Jeff Gordon, in its coverage of NASCAR's second-tier XFINITY Series this season.

Fox Sports 1 will broadcast 12 races this year while two will be on Fox. Adam Alexander will do play-by-play alongside Michael Waltrip and current Sprint Cup drivers that include Gordon, reigning champion Kevin Harvick and Brad Keselowski. Fox did not specify which races the four-time champion will call.

Gordon said Thursday this season will be his last as a full-time driver, but promised he'd remain active in NASCAR. He did not reveal what he would do, though, after 2015.

Fox did not specify which races the four-time champion will call.

Checkered flag: Jeff Gordon announces 2015 will be his last NASCAR season