You may never have Kei Nishikori's brilliant backhand, but now you can own what once lived on the back of his hand.

The pink Tag Heuer professional sports watch Nishikori wore during the Pink Ribbon campaign in 2016 to raise awareness of breast cancer is up for auction on ebay now.

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All proceeds from the sale of the watch will benefit the National Breast Cancer Foundation.

The watch also comes with a case and certificate of authencity.

Photo credit: @KeiNishikori