Benoit Paire explained recently that he's motivated to turn his career around but he didn't remain professional for too long.
He was in Japan playing at a challenger event and he was clearly annoyed. When he dropped a point in the opening set at 3-3 Paire had an outburst in French which was translated by Tennis Majors. He shouted:
“F--- you! Go f--- yourself! F--- your mother! Your mother the whore!”
His opponent was Australian and he clearly didn't understand what Paire was shouting but had he, things would have been quite interesting. Paire lost the next point as well to lose the game but rambled to himself on the bench:
“Come on, great! This is great! These tournaments are great. But why am I coming to Japan? Why do I come to Japan? Why am I coming to Japan? Explain to me why. You come, he (the referee) doesn’t see anything. Explain to me why."
Funnily enough he ended up winning the match in three sets but retired in the next match due to wrist pain. Check out the outburst below.