Seven Cup Series teams to drop to rear of the field for Sunday’s start at Kansas

Seven teams will drop to the rear of the field before the start of Sunday's NASCAR Cup Series race at Kansas Speedway because of unapproved adjustments. The move comes after eventful Saturday sessions in practice and qualifying for Sunday's AdventHealth 400 (3 p.m. ET, FS1, MRN Radio, SiriusXM NASCAR Radio). Several cars either scraped the outside retaining wall or had trouble with rear tires going flat. RELATED: Live leaderboard | At-track photos: Kansas The teams that will drop to the back of the pack before the green flag:

• No. 6 RFK Racing Ford for driver/owner Brad Keselowski
• No. 10 Kaulig Racing Chevrolet for Ty Dillon
• No. 19 Joe Gibbs Racing Toyota for driver Chase Briscoe
• No. 21 Wood Brothers Racing Ford for Josh Berry
• No. 38 Front Row Motorsports Ford for Zane Smith
• No. 54 Joe Gibbs Racing Toyota for Ty Gibbs
• No. 88 Trackhouse Racing Chevrolet for Shane van Gisbergen

Of those, Gibbs was the best qualifier, earning the sixth starting spot in Saturday's time trials. The 22-year-old driver was also fastest in Cup Series practice.