John McEnroe opens up about how the pressures of tennis affected his mental health

Credit film clips to: NBCUniversal The tennis legend John McEnroe who famously lost his temper many times on court has opened up about his career and mental health in a new documentary. He talks about how he hopes to set the record straight and take a look at the man behind the outbursts and fiery temper, and says that he believes he may have had more success if he hadn't felt so much pressure.