Roddick took the first set in a tiebreaker and lost the second set in a tiebreaker. Del Potro steamrolled the last two, 6-2, 6-4. Darron Cummings / AP Roddick is the last American to win a Grand Slam event — he won the U.S. Open in 2003. Mike Segar / Reuters He's also reached four other Grand Slam finals: Wimbledon in 2004, 2005, and 2009, and the U.S. Open in 2006. Roger Federer beat him each time. Mike Segar / Reuters Roddick's also the most recent tennis #1 not named Roger Federer, Rafael Nadal, or Novak Djokovic; he held the honor from 11/3/03 to 2/1/04. Kevin Lamarque / Reuters Here, he exchanges words with del Potro, who will advance to face Djokovic in the quarterfinals. Kevin Lamarque / Reuters In the stands, Roddick's wife, model Brooklyn Decker, looked on. Kevin Lamarque / Reuters She was sad. Kevin Lamarque / Reuters Happy trails, Andy Roddick. Mike Segar / Reuters Here's his touching interview following the match. "One thing I'm not scared about retirement is the people I go home to."