NascarThere have been at least two rivalries that existed this past season. Two teammates seem to be the best this year: Matt Kenseth and Carl Edwards. We haven’t just seen 1 isolated incident between the two this season, but we saw the situation escalating in the Busch Series race at Kansas, continuing at the Martinsville Nextel Cup race, where Carl Edwards confronted Matt Kenseth while he was being interviewed by SPEED.