"Unfortunately, I had an abdominal problem in Paris last weekend and I also have a problem with an ankle join that needs to be dealt with in the operating room today".
Alexander Zverev of Germany celebrates a point against Alex De Minaur of Australia during they third round of the 2018 Rolex Shanghai Masters on Day 5 at Qi Zhong Tennis Centre on October 11, 2018 in Shanghai, China. Djokovic might dwell arduously on the tennis courts of London as his draw seems plausibly hard to get through.
"Hello all, I'm writing these words at the end of my season", he said in the first of a series of tweets posted on Monday afternoon.
There, the young Greek saved a match point against Kevin Anderson to become the youngest player with four straight Top 10 wins at Masters 1000 events, setting the final against world number 1 Rafael Nadal where he fought well in the second set before losing 6-2 7-6, missing a chance to add the fifth Top 10 win that week. "I couldn't be happier to finish the season like this". Kei Nishikori has also been drafted in to replace Argentine Juan Martin del Potro who pulled out due to a knee injury.
So not much has changed, except for the fact it is a different injury causing him to end his season prematurely.
Nadal is five years younger then Federer, but his all encompassing physical style of play has always put demands on him physically.