![Tokyo, Japan. 29th Sep, 2019. World's No.1 ranker Novak Djokovic of Serbia returns the ball against his doubles partner Filip Krajinovic of Serbia during a training session for the Rakuten Japan Open Tokyo, Japan. 29th Sep, 2019. World's No.1 ranker Novak Djokovic of Serbia returns the ball against his doubles partner Filip Krajinovic of Serbia during a training session for the Rakuten Japan Open](https://c8.alamy.com/comp/2A1YXH2/tokyo-japan-29th-sep-2019-worlds-no1-ranker-novak-djokovic-of-serbia-returns-the-ball-against-his-doubles-partner-filip-krajinovic-of-serbia-during-a-training-session-for-the-rakuten-japan-open-tennis-championships-at-the-ariake-colosseum-in-tokyo-on-sunday-september-29-2019-a-2-million-us-dollars-atp500-tournament-will-be-held-here-from-september-30-through-october-6-credit-yoshio-tsunodaafloalamy-live-news-2A1YXH2.jpg)
Tokyo, Japan. 29th Sep, 2019. World's No.1 ranker Novak Djokovic of Serbia returns the ball against his doubles partner Filip Krajinovic of Serbia during a training session for the Rakuten Japan Open
![Tokyo, Japan. 1st Oct, 2019. World's No.1 ranker Novak Djokovic of Serbia reacts as he defeated Alexei Popyrin of Australia during the first round of the Rakuten Japan Open tennis championships at Tokyo, Japan. 1st Oct, 2019. World's No.1 ranker Novak Djokovic of Serbia reacts as he defeated Alexei Popyrin of Australia during the first round of the Rakuten Japan Open tennis championships at](https://c8.alamy.com/comp/2A29WFW/tokyo-japan-1st-oct-2019-worlds-no1-ranker-novak-djokovic-of-serbia-reacts-as-he-defeated-alexei-popyrin-of-australia-during-the-first-round-of-the-rakuten-japan-open-tennis-championships-at-the-ariake-colosseum-in-tokyo-on-tuesday-october-1-2019-djokovic-defeated-popyrin-6-4-6-2-credit-yoshio-tsunodaafloalamy-live-news-2A29WFW.jpg)
Tokyo, Japan. 1st Oct, 2019. World's No.1 ranker Novak Djokovic of Serbia reacts as he defeated Alexei Popyrin of Australia during the first round of the Rakuten Japan Open tennis championships at
![Tokyo, Japan. 29th Sep, 2019. World's No.1 ranker Novak Djokovic of Serbia tosses the ball to deliver a service against his doubles partner Filip Krajinovic of Serbia during a training session for Tokyo, Japan. 29th Sep, 2019. World's No.1 ranker Novak Djokovic of Serbia tosses the ball to deliver a service against his doubles partner Filip Krajinovic of Serbia during a training session for](https://c8.alamy.com/comp/2A1YXHK/tokyo-japan-29th-sep-2019-worlds-no1-ranker-novak-djokovic-of-serbia-tosses-the-ball-to-deliver-a-service-against-his-doubles-partner-filip-krajinovic-of-serbia-during-a-training-session-for-the-rakuten-japan-open-tennis-championships-at-the-ariake-colosseum-in-tokyo-on-sunday-september-29-2019-a-2-million-us-dollars-atp500-tournament-will-be-held-here-from-september-30-through-october-6-credit-yoshio-tsunodaafloalamy-live-news-2A1YXHK.jpg)