London: Swiss maestro Roger Federer brought world number one Novak Djokovic's 23-match winning record to an end by defeating the latter in their round-robin clash at the Barclays ATP World Tour Finals.


Switzerland's Roger Federer (R) shakes hands with Serbia's Novak Djokovic after winning his men's singles group stage match on day three of the ATP World Tour Finals tennis tournament in London. Pic/AFP

Federer defeated Djokovic in straight sets to progress through to the semi finals of the tournament.