The spirit was as strong as ever but Rafael Nadal’s troublesome knee failed him in the end as the Spaniard quit the ATP Finals after a painful defeat by Belgium’s David Goffin on Monday.
Nadal, at 31 the oldest player to finish a year ranked number one, fought until the last point, saving four match points in a compelling clash, before losing 7-6(5) 6-7(4) 6-4 in two hours and 37 minutes.
“I am off, my season is finished.

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