Not after race
This wasn't after a race but in the middle of a run on an easy day back when I was in college. As the team was running through town, a car drove by a little too close and one of the guys slapped the back of it hard on the trunk. The guy pulled off the side of the road and gets out of the car. Says something like "who hit my car". One guy on the team that was always a jerk wanna be alpha kind of guy goes "I did!" He runs right up to the guy and slugs him right in the jaw! So they push and shove each other a few times and the guy runs back to his car and drives away! Can't blame him since there were probably 15 guys standing there watching.