For those of you who follow Jon Wertheim's mailbag on CNNSI, he again mentioned the possibility of Federer possibly prolonging his stay at the top by switching to a bigger racket. Sampras has gone on record saying he might have been more competitive in his later years, especially on clay if he had used a bigger racket. Do you think Federer will be too stubborn to experiment with a different headsize? To me, this issue is similar to the one many players had to deal with in the late 70's-early 80''s when graphite rackets became popular. Some traditionalists insisted on staying with wood. Borg didn't want to switch even during his first failed comeback attempt. Evert also resisted, but eventually relented and it might have been a factor in her gaining back the number one ranking in the middle of 1985, after a few years of being dominated by Navratilova. Graf is another player who comes to mind. After achieving gigantic success with her old Dunlop, she was passed in the rankings by Seles in the early 90's and started losing more matches to old rivals like Sabatini and Sanchez-Vicario. In 1994, she switched to Wilson. I think this new racket was slightly bigger and lighter than her Dunlop. She started dominating the big events again. Connors also adapted his equipment later in his career. Although he was too old to be any kind of consistent force in the game, it still enabled a few bright moments for him, most notably his 1991 US Open semifinal run. Like what Wertheim said, if Roger did switch to a bigger racket, he might be able to buy a few more years where he is more competitive, especially against his fellow top players. Besides, he can always switch back to his old racket if things don't work out as planned.