Novak Djokovic beats Joao Sousa to reach 4th round of U.S. Open
Novak Djokovic has reached at least the semifinals at Flushing Meadows each of the past six years.
Clive Brunskill /Getty Images
Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.