John McEnroe, who is covering Wimbledon for the BBC and ESPN, has been widely criticized by fans for his on-air blunders and lack of knowledge about lower-ranked players

Former world number nine Fabio Fognini has heeded John McEnroe’s advice by retiring following his Wimbledon exit. Fognini, 38, threatened to produce one of the biggest upsets in Wimbledon history after taking two-time defending champion Carlos Alcaraz to five sets.

John McEnroe has been accused of "disrespecting" tennis players with his error-strewn Wimbledon commentary - and fans are now demanding he be axed from the airwaves