Aces and faults

ACE

Roger Federer's custom U.S. Open sneakers that feature the New York City skyline. And the No. 5 for his five Open titles.

FAULT

Wind. (Do not try a ball toss at home in these conditions.)

ACE

The banners on the national tennis center grounds picturing every men's and women's tournament champion since the open era dawned in 1968.

FAULT

A sudden drop-off in action as the fields dwindle. Only eight courts were in use Saturday.

Numbers

4 Days it took to finish an Open match in 2003 between Francesca Schiavone and Ai Sugiyama, because of repeated rain delays. Wednesday was the seventh anniversary of the day that match began.

15 (of 32) players through to the men's third round from either Spain (9) or France (6). Among the last 32 women, the national leader was Russia (7 players still alive).

44 Consecutive Grand Slam tournament appearances by Roger Federer, the longest active streak by any player.

Furthermore

Julia Elbaba, 16, of Oyster Bay, won two rounds of the Open's junior qualifying tournament, including an upset of the qualifiers'

No. 2 seed, Zhu Lin of China, to advance into the main draw of junior competition, which begins Sunday. Elbaba is ranked 176th among world junior players.