Madison Keys hurt hamstring in Wimbledon pullout match

(Photo credit: Susan Mullane-USA TODAY Sports)

Madison Keys revealed Monday that she suffered a hamstring injury of unknown severity during Sunday's fourth-round match at Wimbledon against Jasmine Paolini.

Keys, the No. 12 seed, was tied a set apiece with the seventh-seeded Italian. Keys led 5-2 in the decider set and was serving but could not close out the match. Paolini had cut her deficit to 5-4 when Keys left the cou