Serena Williams of the U.S., right, shakes hands with Russia’s Maria Sharapova, left, after defeating Sharapova in two sets 6-4, 6-4, in the women’s final of the French Open tennis tournament, at Roland Garros stadium in Paris, Saturday June 8, 2013. (AP Photo/Michel Spingler) by Howard Fendrich LONDON (AP) — As her agent nodded along approvingly from a front-row seat, Serena Williams sounded contrite and composed. Well-rehearsed, too. Williams even managed to crack herself up with a couple of jokes during her news conference at Wimbledon as the defending champion, where the primary topic was hardly her 31-match winning streak or her bid for a sixth title at the All England Club or her injured sister Venus’ absence from the field. Instead, more than half the questions at Sunday’s session revolved around themes generating the most buzz on the eve of tennis’ oldest and most prestigious Grand Slam tournament: what Williams was quoted as saying in a recent magazine article — and Maria Sharapova’s surprisingly forceful verbal swipe in reaction to that story.