Djokovic, Murray to renew rivalry

Stars to collide in quarters after straight-set victories at humid Open

Former champions Novak Djokovic and Andy Murray booked a tantalizing US Open quarterfinal duel on Monday with straight-set fourth-round victories.

World No 1 and top seed Djokovic did not let Philipp Kohlschreiber stand in the way of another Grand Slam last-eight appearance, defeating the 22nd seed from Germany 6-1, 7-5, 6-4 on another oppressively muggy New York day.