(AP Photo/Rick Stevens, File)

WIMBLEDON, England (AP) Serena Williams joked - or was it a joke? - that she activated the "Out of office" message on her email account so anyone trying to reach her about her many non-tennis activities while she's at Wimbledon would know why no response arrived immediately.

Great as Williams is with a racket in her hand, successful as she's been, her sport has never been the only activity that interested her or occupied her time. All of which might very well be a factor in why, just shy of 41, she is still in the game, returning to singles action for the first time in a year, and was smiling and chuckling occasionally while taking questions Saturday in the All England Club's main interview room during a pre-tournament news conference.

"A little surreal," the 23-time Grand Slam champion said, "sitting here again."

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