(Reuters) - Reigning champion Novak Djokovic and number three seed Roger Federer will square off in a modern tennis classic when they take to center court in the first men's semi-final at the Australian Open on Thursday.
At stake is a shot at history. Both are bidding to equal Australian Roy Emerson's record of six titles, set in the pre-Open era, and their head-to-head count is tied at 22 wins apiece.
Federer, who has not won a grand slam title since 2012 and lost five of his eight matches against Djokovic last year, is in arguably the better form, dropping just one set in five matches en route to his mouth-watering clash with the Serb.