It's as much of a tradition in NASCAR as the races themselves—drivers' tempers flaring up after some unfavorable on-track contact.
The sanitized world of multi-million dollar corporate sponsors aside, competitive people are by nature competitive and they don't take too kindly to having themselves taken out of competition. Sometimes incidents can be glossed over, sometimes grudges are held, but sometimes frustration overpowers a pair of drivers (and their crews) and leads to an all-out battle, on or off the track.
We may not be in the era of drivers coming after one another every race anymore, but that doesn't mean we haven't still had our share of interesting feuds over the past decade. These 10 all stand out in one way or another.