Japanese tennis star Kei Nishikori has enlisted the help of Michael Chang as he looks to break into the top 10 in 2014.
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Chang will join Nishikori’s coaching staff for 17-20 weeks, Nishikori’s management team announced on Wednesday.
The 41-year-old American will act as an advisory coach to the 17th-ranked Nishikori, with full-time coach Dante Bottini remaining in his current role. Nishikori has been training with Chang for the last two weeks in California.
The 23-year-old rose to No. 11 last season and has contributed to a rejuvenation of tennis in Japan. He won his third career title in Memphis in February.
Chang became the youngest man to earn a Grand Slam singles title when he won the French Open in 1989 at 17.