There's a fine line between gritty and filthy in the reckless world of sports.
Athletes often find themselves bridging the gap between the two extremes with borderline acts of fury, and they're naturally forgiven for their accidental chaos.
Sometimes, a player will thoroughly cross the line.
Sucker punches and stomps become headlines. Pundits have noted heat of the moment as a possible cause, as well as thorough disregard for decency.
We're here to look at the dirtiest plays in sports history.
This is athletic disgrace at its worst.