Top seed Djokovic untroubled in New York
Playing mostly mistake-free tennis, top-seeded Novak Djokovic reached the quarterfinals at the US Open for the eighth year in a row - and 22nd consecutive Grand Slam tournament overall.
Djokovic, the 2011 champion at Flushing Meadows, made only 19 unforced errors, saved both break points he faced, and breezed past 22nd-seeded Philipp Kohlschreiber of Germany 6-1, 7-5, 6-4 Tuesday.
The last time Djokovic was eliminated before the quarterfinals at a major was a third-round loss to Kohlschreiber at the 2009 French Open.
Next up for the Serb, who reached the US Open each of the past four years, will be a match against 2012 US Open champion Andy Murray or ninth-seeded Jo-Wilfried Tsonga.