The NASCAR Xfinity Series race at Martinsville Speedway concluded with a dramatic post-race altercation. Driver Chandler Smith confronted fellow racer Cole Custer, ending with Smith throwing a punch before team members got involved in the brawl.

Both verbal and physical blows were exchanged after the NASCAR Xfinity race at Martinsville as only four drivers moved on to the Championship battle at Phoneix.

The NASCAR Cup Series will set the Championship 4 during Sunday's Xfinity 500 race at Martinsville Speedway. Tyler Reddick locked himself into the Championship 4 with the last-lap pass and win at Homestead last week,