World No. 9 Kei Nishikori has parted ways with long-time coach Dante Bottini, announcing the coaching change on social media.
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Nishikori, who hasn’t played since the U.S. Open due to a forearm injury, began working with Bottini at the IMG Academy in 2011.
The Japanese took to Twitter to announce the move, saying it was time for a ‘new voice’ at this stage of his career.
“After nine years of working together literally day in and day out, I have decided it is time for a new voice. 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 nine years and our friendship,” Nishikori wrote.
Bottini oversaw the best years of Nishikori’s career, including when he made his one and only Grand Slam final in 2014, along with winning 11 of his 12 ATP titles.
Nishikori will continue to work alongside former Grand Slam champion Michael Chang, who joined his team in 2014.
The 29-year-old won his first ATP title in three years to launch 2019 at the Brisbane International, defeating Daniil Medvedev in the final, while he also made quarter-finals at the Australian Open, Roland Garros and Wimbledon.
However, Nishikori hasn’t played since a third round defeat to Alex de Minaur at the U.S. Open, citing a forearm injury that has caused him to miss his most important swing of the season in Asia, including Tokyo and the Shanghai Masters.
Nishikori has slid out of ATP Finals contention as a result, dropping to No. 12 in the Race to London, with his next tournament scheduled to be the Paris Masters.