Sebastian Vettel and Mark Webber
Sometimes Formula One Drivers and managers aren’t on the same page. Vettel and Webber were Red Bull teammates but they didn’t like each other. They both wanted to win races but Webber had an advantage in one race. The team ordered Vettel to help Webber’s position but he ignored them (via Planet F1).

Later, an enraged Webber ranted about his teammate’s brazen selfishness. However, Vettel didn’t care because he felt that he did the right thing. It’s not always easy to convince drivers to help somebody else because they want the glory. It wasn’t the first time it happened but they became bitter enemies after.