Pennetta, at 33 the oldest first-time Grand Slam finalist in the Open era, on Saturday became the first Italian to win the US Open women's crown with an efficient 7-6 (4), 6-2 victory over compatriot and childhood friend Roberta Vinci.
Michael Jordan was a special guest in Roger Federer's courtside box at the US Open on Tuesday night, the rare spectacle of an all-time great in one sport cheering on an all-time great from another.
Victor Estrella came to the perfect place to earn his first Grand Slam victory at the age of 34.
Defending champions Guangzhou Evergrande were knocked out of the AFC Champions League by Western Sydney Wanderers on away goals despite beating the fledgling Australian outfit 2-1 in Wednesday's quarterfinal second leg in China.
Peng put Radwanska on the defensive and claimed the biggest scalp of the championship on her third match point with a backhand crosscourt winner.
Ruthless Sharapova serves up US Open lesson to old friend Kirilenko
Spinning in 70 mph second serves, grabbing at his hamstring during points, Andy Murray gritted his way through head-to-toe cramps to win at the US Open.
World No 39 Peng Shuai beat Zheng Jie 6-3, 6-3 in a battle of Chinese 'Golden Flowers' to advance to the second round of the US Open on Monday.
Ruthless Sharapova serves up US Open lesson to old friend Kirilenko
The final Grand Slam of the season gets under way in New York with the absence of Rafael Nadal and Li Na.
World number 39th Peng Shuai beat compatriot Zheng Jie 6-3, 6-3 in the 2014 U.S. Open first round match here on Monday.
20-year-old Chinese rising star Zheng Saisai moved into US Open second round after beating Stefanie Voegele from Switzerland 1-6, 6-2, 6-2 in her Grand Slam debut on Monday.