ACE. California twins Bob and Mike Bryan, with their fourth U.S. Open doubles title Friday, set an open era (back to 1968) record for most major tournament men's doubles championships, with 12. The Bryans defeated Leander Paes and Radek Stepanek, 6-3, 6-4.

ACE. The only wild-card entries in any of the Open's divisions to advance as far as the semifinals are both in girls singles and both Americans: Victoria Duval of Delray Beach, Fla., and Samantha Crawford of Tamarac, Fla.

LET. Not a good or bad thing, but rare: playing in sunglasses. (The small list includes Samantha Stosur, Janko Tipsarevic and junior player Duval.)

ACE. Gracious comments by both winners and losers in Thursday's men's quarterfinal play. David Ferrer, after defeating Tipsarevic: "My opponent, he deserves also to win this match, no?" Tipsarevic: "It was not maybe a quarterfinal the crowd wanted to see, without Rafa [Nadal] being there, but I think David and me -- and not trying to overexaggerate -- played, until now at least, the best match of the tournament. Novak Djokovic, after beating Juan Martin del Potro: "It was straight sets, but it was much, much closer and tougher than the score indicated." Del Potro: "He deserved it. He was too much for me."


By the numbers

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30 Andy Roddick's age as he goes into tennis retirement.

30 David Ferrer's age as he plays in Saturday's men's semifinals in what has been the best of his 13 pro years.

30 Serena Williams' age as she goes into Saturday night's women's final.


Furthermore . . .


Because of forecasts for possible showers in the afternoon, Saturday's semifinals -- the first match will feature Andy Murray against Tomas Berdych -- was moved from the usual noon start to 11 a.m. Billie Jean King National Tennis Center gates will open at 10.