THE ATP FINALS, WHICH DISAPPEARED AS THE 'BIG THREE' IN 23 YEARS, ANNOUNCED THAT DJOKOVIC, THE MOST WINNER OF THE TOURNAMENT, WOULD NOT BE INJURED, AND THE SEASON ENDED WITHOUT A TOUR TITLE FOR THE FIRST TIME IN 19 YEARS

Is the era of men's tennis legend Novak Djokovic (Serbia) coming to an end. Djokovic has given up participating in the ATP Tour Finals, the last tournament of the season. "I was really looking forward to going to Turin, Italy, but my constant injuries have made it difficult for me to play," Djokovic wrote on his social network service on Sund