You don't always have to be American to be embraced by New Yorkers at the U.S. Open.
Juan Martin del Potro, the 2009 Open champion, feels the love in places far from his native Argentina for many reasons. He has fought long and hard, coming back from injuries and surgeries.
The Olympic silver medalist was given a wild card into the Open and has made the most of his opportunity, reaching the quarterfinals with a 6-3, 3-2 (retired) win over Dominic Thiem of Austria on Monday.
Thiem has been hampered by blisters and now an ailing right knee, which forced him to retire from the fourth-round match.
Del Potro is in his first Grand Slam quarterfinal...