Novak Djokovic drops the second set to Marton Fucsovics and battles the heat the entire match, seeing a cardiologist during the second set, before rallying back and winning his US Open first-round match in four sets.
✔ Subscribe to ESPN on YouTube: http://es.pn/SUBSCRIBEtoYOUTUBE
✔ Subscribe to ESPN FC on YouTube: http://bit.ly/SUBSCRIBEtoESPNFC
✔ Subscribe to NBA on ESPN on YouTube: http://bit.ly/SUBSCRIBEtoNBAonESPN
✔ Watch ESPN on YouTube TV: http://es.pn/YouTubeTV
Visit ESPN on YouTube to get up-to-the-minute sports news coverage, scores, highlights and commentary for NFL, NHL, MLB, NBA, College Football, NCAA Basketball, soccer and more.
More on ESPN.com: http://www.espn.com