Nishikori has had a strong year so far, having won his 11th Tour title at the Memphis Open and reached the Australian Open quarter-finals as well as the U.S. Open semi-finals.
Nishikori is currently nursing a muscle injury, which he sustained during the Japan Open in Tokyo last week, and was forced to sit out this week's Shanghai Masters. [nL3N1CB27C]
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(Reporting by Shravanth Vijayakumar in Bengaluru; Editing by Ken Ferris)
