Overview
- Justin Bonsignore will drive the No. 18 Toyota for Joe Gibbs Racing at Martinsville.
- The Lap 46 six-car crash at Talladega caused a red flag after Connor Mosack spun into Sawalich's path.
- Sawalich was transported for evaluation and discharged the same night, later saying he is prioritizing his health.
- The rookie sits 17th in the Xfinity standings and had not missed a start before this withdrawal.
- Joe Gibbs Racing has not set a return date, with a Phoenix start next week possible pending medical clearance.