ESPN 100: Nos. 30-47

...win the Preakness since Nellie Morse. Who was president then? Calvin Coolidge, in 1924 39. Juan Martin del Potro downed stars Rafael Nadal and Roger Federer on his way to the U.S. Open...

Federer facing ever-growing challenges

After an emotional 2009 season full of unprecedented highs and gut-wrenching lows, 28-year-old Roger Federer is back on top. But he'll find that the going only gets tougher from here.

Best of the World Tour Finals

...year-end men's extravaganza. Davydenko topped the triumvirate of Rafael Nadal, Roger Federer and Juan Martin del Potro in London, thus knocking out the Australian Open champion, French Open and Wimbledon titlist, and...

Davydenko takes ATP Finals title

Nikolay Davydenko has won the first big tournament of his career, beating U.S. Open champion Juan Martin del Potro 6-3, 6-4 to win the ATP World Tour Finals.

...Nikolay Davydenko of Russia serves the ball during the men's singles final match against Juan Martin Del Potro of Argentina during the Barclays ATP World Tour Finals at the O2 Arena on November...

Federer out of ATP Finals

Roger Federer has been eliminated from the ATP World Tour Finals after losing to Nikolay Davydenko 6-2, 4-6, 7-5 in the semifinals.

...Federer of Switzerland returns the ball during the men's singles round robin match against Juan Martin Del Potro of Argentina during the Barclays ATP World Tour Finals at the O2 Arena on November...

Davydenko win knocks Djokovic out

Nikolay Davydenko grabbed the last semifinal spot at the ATP World Tour Finals by beating Robin Soderling 7-6 (4), 4-6, 6-3, knocking defending champion Novak Djokovic out of the tournament.

LONDON, ENGLAND - NOVEMBER 26: Juan Martin Del Potro of Argentina celebrates going through to the semi-final after he won his match during...

Juan Martin Del Potro of Argentina plays the ball through his legs against Roger Federer of Switzerland in a...

Waxing and waning in the World Tour Finals

...first five days. Get them some calculators Talk about a bizarre scene Thursday evening. There Juan Martin del Potro was, adrift on court, not knowing whether he'd advanced to the semifinals after defeating...

Del Potro squeaks into semifinals

Andy Murray wasted 12 of 13 break points before overcoming Fernando Verdasco 6-4, 6-7 (4), 7-6 (3) Thursday to close in on a semifinal spot at the ATP World Tour Finals.

Juan Martin Del Potro of Argentina gestures as he plays against Fernando Verdasco of Spain in a Singles match...

Del Potro looking to re-enact U.S. Open shocker

LONDON -- Juan Martin del Potro had just fended off Fernando Verdasco in a tense, dramatic encounter at the World Tour...

More to be thankful for than the Detroit Lions

...What am I, nuts? If Kim can do this, sure as shootin' I can, too! Juan Martin del Potro: It may pain him to do it, but he ought to express his thanks to...