Some of the ATP World Tour's top stars including Novak Djokovic, Grigor Dimitrov and Dominic Thiem join coaches such as Michael Chang and Dani Vallverdu to explain the most important aspects of playing on clay. Watch live tennis at tennistv.com.
If Kei Nishikori wishes to return to the Top 10 in the ATP Rankings, only hard work on- and off-the-court will satisfy his coaches Michael Chang and Dante Bottini. Last week, in his return to competitive play for the first time in five months, Nishikori lost to Dennis Novikov on the ATP Challenger Tour in Newport Beach, but there are already signs of progress. The Japanese star has bounced back this week in Dallas, returning to the Challenger circuit to exact immediate revenge on Novikov, and now finds himself in the quarter-finals after a three-set win over Matthias Bachinger. Chang and Bottini, who both coach Nishikori, shared their thoughts with ATPWorldTour.com on the return of the 2014 US Open finalist....