Why end of Novak Djokovic’s French Open dream signals the start of a new era

Novak Djokovic was eliminated from the French Open by 19-year-old Brazilian Joao Fonseca in a five-set match. The defeat means Djokovic will not be adding to his Roland Garros title count this year, and guarantees that Paris will see a new Grand Slam champion crowned at this year's tournament. The result has been described as a signal of a generational shift in men's tennis.