Kei Nishikori announced Tuesday that he has split with his long time coach Dante Bottini.  The pair have worked together since 2011.

Bottini guided Nishikori to 11 of his 12 ATP titles and an Olympic bronze medal in 2016.  Nishikori reached a career high ranking of No. 4 during his partnership with Bottini. Nishikori was also coached by Michael Chang at majors.

“After nine years of working together literally day in and day out, I have decided it is time for a new voice,” wrote Nishikori, who is currently sidelined with a right-elbow injury.

“I am forever grateful for Dante’s contributions to my career and we will obviously remain very close friends. I appreciate so much the last 9 years and our friendship.”

Daniil Medvedev  won the Shanghai Masters title with a  6-4, 6-1 win over Alexander Zverev on Sunday. It was his second consecutive Masters title after winning in Cincinnati. He also reached the grand slam final at the US Open losing to Rafael Nadal.

Medvedev has been a tear since the summer hard court season began. His 29-3 record since Wimbledon has moved him to No.4 in the world rankings behind the Big Three.

Medvedev leads the tour with 59 wins this season. Speaking of the incredible season he has had, Medvedev said, “Something clicked in my game in USA,” I don’t know why. I think it’s just the hard work that I have been doing”.

“But I started to understand even more about my game, even more I would say about my serve, about my volley, about everything, like kind of what do I have to do when?”