Roger Federer has exclusively told CNN that he was so excited after his historic Wimbledon victory over Andy Roddick, that he could not sleep on Sunday night. Federer’s sixth Wimbledon title in seven years gave him his 15th grand slam victory — surpassing the watching Pete Sampras’ record of 14 — and thr Swiss has admitted he still cannot believe he has been able to achieve such an histhoric feat
