John McEnroe had many memorable run-ins with Bjorn Borg and Jimmy Connors over his decorated tennis career, but the ...

John McEnroe was one of the most dominant tennis players of his era, but he faced no shortage of stiff competition during his time on the tour, especially from one unexpected name ...

1981 – During the first round at Wimbledon, McEnroe lambastes an official over a call and is penalized. “You CANNOT be serious!” becomes McEnroe’s catchphrase.

1981 – During the first round at Wimbledon, McEnroe lambastes an official over a call and is penalized. “You CANNOT be serious!” becomes McEnroe’s catchphrase.

1981 - During the first round at Wimbledon, McEnroe lambastes an official over a call and is penalized. “You CANNOT be serious!” becomes McEnroe’s catchphrase.

McEnroe and Borg played each other 16 times in one of the sport’s biggest rivalries, including in the finals of Wimbledon and the U.S. Open in 1980 and 1981.

1981 - During the first round at Wimbledon, McEnroe lambastes an official over a call and is penalized. “You CANNOT be serious!” becomes McEnroe’s catchphrase.

1981 – During the first round at Wimbledon, McEnroe lambastes an official over a call and is penalized. “You CANNOT be serious!” becomes McEnroe’s catchphrase.