SHANGHAI—Former world number one Novak Djokovic, the last surviving member of tennis’ “Big Four,” said he does not plan on stopping any time soon but admitted that the retirement of rivals Roger Federer, Andy Murray, and Rafa Nadal has been overwhelming.
Djokovic, Federer, Nadal, and Murray were dubbed the “Big Four” during a period of dominance when they won a combined 69 Grand Slam titles and were involved in some of the most memorable matches of the last two decades.
