juan martin del potro

Juan Martin del Potro ended Andy Murray's hopes of progressing to the semi-finals of the Barclays ATP World Tour Finals with a 6-2 6-7 6-3 victory over Roger Federer at the O2 Arena.

Andy Murray made home advantage count as he edged a topsy-turvy clash with US Open champion Juan Martin del Potro 6-3 3-6 6-2 in the opening singles match of the Barclays ATP World Tour Finals at London's O2 Arena.

US OPEN champion Juan Martin Del Potro will play at next year's Queen's Club tournament in an effort to improve his grasscourt game for Wimbledon.

By taking out Roger Federer in five sets at the U.S. Open, Juan Martin del Potro proved he has now arrived, writes Richard Deitsch.

Juan Martin del Potro has ended Roger Federer's run of dominance at the U.S. Open, stunning the top-ranked Swiss great in five sets to win in his first Grand Slam final.

Game-by-game analysis of the U.S. Open final between Roger Federer & Juan Martin del Potro.

Juan Martin del Potro did the unthinkable. He stopped Roger Federer's Open streak at five with a stunning 3-6, 7-6, 4-6, 7-6, 6-2 win.

Roger Federer and Juan Martin del Potro are meeting in the U.S. Open final. Refresh often for up-to-the-minute commentary from SI.com's Bryan Armen Graham during today's match.

NEW YORK (AP) -- Juan Martin del Potro has advanced to his first Grand Slam final with a 6-2, 6-2, 6-2 victory over Rafael Nadal in the U.S.

Open semifinals.

Maybe Andy Roddick hasn't recovered as well as we all think from his loss at Wimbledon. Look at the losses he has had since then.

He lost two tight matches to Juan Martin del Potro, in Washington, D.C., and Montreal. I think the one in D.C. ended in a third-set tiebreak.

He lost to Sam Querrey in Cincinnati in two tiebreak sets and now to John Isner in a fifth-set tiebreak.

I get the feeling when things get close in the end, he just doesn't have the confidence to pull it out.

What do you think of his losses? -- Beth D., Brooklyn, N.Y.