Wimbledon 2006
Friday's match in the last four will be Federer's ninth consecutive Grand Slam semi-final, only one short of Ivan Lendl's professional era record.
Swede Bjorn Borg and American Pete Sampras were the last two players to win four Wimbledon singles titles in a row and Borg is also the only man in the professional era to have won the singles title without dropping a set.
Borg did it in 1976 and Federer is firmly on course to emulate him.