As it is Wimbledon and my knowledge of tennis players only extends to the one I fancy...
Gabriella Sabatini only ever won one grand slam (us in 1990). She was a couple of championship points ahead in the Wimbledon final the following year but still managed to lose to Graf.
(And she is still rather fit 22 years later)
She's a keen cyclist now - she's done a couple of Etapes I think
http://www.bmc-racing.com/us-en/bmc-switzerland/friends-of-bmc/gabriela-sabatini.html