Djokovic, Federer on French Open collision course

PARIS, May 20 (AFP): Novak Djokovic and Roger Federer were placed on a French Open semi-final collision course Friday as defending champion Rafael Nadal was handed an opener against Wimbledon marathon man John Isner. World number two Djokovic, on a run of 37 successive wins this year, was placed in the same half of the draw for the second Grand Slam event of the season as Federer, the 2009 champion and 16-time major winner. Both men are seeded to reach the last four at Roland Garros, but despite the Serb's undefeated run in 2011, which has left him just five wins shy of John McEnroe's 1984 mark of 42, Federer will be feeling undaunted. Third seed Federer has lost his last three meetings to Djokovic, the Swiss still holds a career 13-9 winning record over the Serb and is 2-1 on clay.