The incident took place at the end of the third quarter with the Redskins deep in Panthers territory and trailing 23-9. Reed was assessed a 15-yard penalty before being removed from the game. Washington was pushed back from the Carolina 12-yard line to the 27, fought back to the 8 and settled for a field goal.
NFL.com captured the play in question around the 4:55 mark:
Reed finished with only one catch for six yards.
The 26-year-old had a shoulder injury that has caused him to bounce in and out of the lineup over the last few weeks. He missed Week 13 and made only one catch in Week 14 while dealing with the issue.
He was limited in practice but was hoping to see an increased role in Week 15 against the Panthers.
"I'm doing better; I'm managing the pain a lot," Reed said Saturday, per John Keim of ESPN.com. "I have more strength in my shoulder and am starting to feel more normal."
But Reed was once again limited Monday and needed to be helped off the field at one point.
As for the punch, Bleacher Report's Mike Freeman was impressed:
In all seriousness, Reed can expect at least a fine as punishment for his actions.