Sometimes you get hit in a dangerous way and you feel like retaliating in kind. It's not recommended, but hockey is an intense and emotional sports at times and these kinds of things happen.
In a very intense battle between the struggling Sharks and always competitive Predators, things got very ugly. Late in the third, with the score at 5-2 for Nashville, Micheal Haley received a questionable hit near the board. Not skipping a beat, he jumped back on his skate, rushed Calle Jamkrok a hit him with a world class punch out of nowhere.
Chaos ensued and penalties were awarded. Haley didn't earn any brownie point with this one.