Roger Federer extends his winning run to 12 matches with win over David Ferrer . Federer, who has won the last four majors, is now unbeaten in 13 meetings against Ferrer. Djokovic edges Murray at ATP finals . He ends Paris and Valencia champion Ferrer 's 11-match unbeaten run . Spaniard must now beat Janko Tipsarevic to have chance of going through .
Roger Federer extends his winning run to 12 matches with win over David Ferrer . Federer, who has won the last four majors, is now unbeaten in 13 meetings against Ferrer. He ends Paris and Valencia champion Ferrer 's 11-match unbeaten run . Spaniard must now beat Janko Tipsarevic to have chance of going through .