Jim Nantz Hurts Wrist During 'Peanut Punch' Demo with JJ Watt

• Jim Nantz attempted a 'Peanut Punch' on JJ Watt during a live NFL broadcast.
• During the demonstration, Nantz injured his wrist.
• JJ Watt held the football while Nantz tried to punch it out of his hands.
• Nantz joked about his injured wrist, saying 'My wrist is broken.'
• The incident occurred during the first half of the Raiders-Bills game on CBS.