Flavia Pennetta announced her retirement after beating fellow Italian Roberta Vinci to win her first Grand Slam title today at the US Open in New York City.

Meadows tomorrow, with the finals of the women's doubles and men's singles events, where world number one Novak

Djokovic of Serbia will face Switzerland's five-time winner Roger Federer.Related storiesSeptember 2015

Roberta Vinci produced one of the greatest shocks in the history of women's tennis by beating world number one Serena Williams' at the US Open to set up a singles final with team mate and fellow Italian Flavia Pennetta.

On a day on which Switzerland's Roger Federer and Serbia's Novak Djokovic each cruised into the men's

the final without losing a set, and has dropped serve just twice in the entire tournament.Top-seeded Djokovic

Roger Federer was in imperious form at the US Open as he thrashed Richard Gasquet in straight sets to book an all Swiss semi-final at Flushing Meadows.

too strong for the big serving South African.The other semi-final in the men's draw will see Serbian Novak

Djokovic take on defending champion Marin Cilic of Croatia.In the women's competition, 26th seed Flavia

World number one Serena Williams maintained her quest for her first calendar Grand Slam as she booked her spot in the semi-finals of the US Open with a three-set victory over sister Venus at Flushing Meadows in New York City.

over the 23rd seed, competing in a US Open quarter-final for the first time since 2010.Men’s top seed Novak

Djokovic is also through to the last four after he overcame Spain’s Feliciano Lopez in four sets.In

second year in a row as he will come up against world number one and nine-times Grand Slam champion Novak

Djokovic in the semi-final  after the Serbian top seed beat Feliciano Lopez of Spain.Djokovic wasted

Games, hit back to square the match.It was to be a mere fleeting moment of success for the Spaniard as Djokovic

BBC commentator Brendan Foster’s claim that Mo Farah is the greatest British sportsman of all time following his fourth and fifth world titles in Beijing last month has sparked a frenzy of opinions and arguments.

But in the last seven years, he has had at least two such rivals in Rafael Nadal, and Novak Djokovic

Serena Williams is set to meet her sister Venus in the quarter-finals of the US Open as her bid to secure a calendar Grand Slam showed no signs of being derailed after she secured a straight sets victory over her fellow American Madison Keys at Flushing Meadows.

in the locker rooms on Friday (September 4).Spain's Roberto Bautista Agut took a set off Serbia's Novak

Djokovic but the world number one hit back to claim a four set win ©AFP/Getty ImagesThe men’s fourth

round saw Serbia’s Novak Djokovic given a brief scare by Roberto Bautista Agut after the Spaniard

World number one Serena Williams survived a scare in the third round of the women’s singles at the US Open as she fought back from a set down to progress, but Rafael Nadal saw a two set lead slip as he was knocked out of the men’s competition at Flushing Meadows.

6-7, 7-6, 6-3, 6-7, 6-1 to keep his hopes of retaining the title alive.Meanwhile world number one Novak

Djokovic sealed a straightforward 6-3 7-5 7-5 win over Italy’s Andreas Seppi, while France’s Jo-Wilfried

as Kei Nishikori among big name casualties on first day of US OpenAugust 2015: Serena Williams and Novak

Djokovic named as top seeds for upcoming US Open

Former champion Andy Murray had to battle back from two sets down to avoid a second round upset against Adrian Mannarino in the US Open at Flushing Meadows.

as Kei Nishikori among big name casualties on first day of US OpenAugust 2015: Serena Williams and Novak

Djokovic named as top seeds for upcoming US Open

American Mardy Fish’s career drew to a close in the second round of the 2015 US Open at Flushing Meadows after he fell to a defeat at the end of a thrilling five-set encounter with world number 18 Feliciano Lopez of Spain.

Dmitrov as the Bulgarian was beaten 6-3, 7-6, 2-6, 4-6, 6-4 by Kazakhstan’s Mikhail Kukushkin.Top seed Novak

Djokovic meanwhile progressed comfortably in straight sets 6-4, 6-1, 6-2 over Austria’s Andreas Haider-Maurer

as Kei Nishikori among big name casualties on first day of US OpenAugust 2015: Serena Williams and Novak

Djokovic named as top seeds for upcoming US Open

Five-times champion and second seed Roger Federer of Switzerland breezed into the second round of the US Open with a comfortable victory over Argentina’s Leandro Mayer on day two at Flushing Meadows.

came into the event on the back of taking the Cincinnati Masters crown by beating world number one Novak

Djokovic and looked in superb touch again as he made light work of the 28-year-old Argentinian.Elsewhere

as Kei Nishikori among big name casualties on first day of US OpenAugust 2015: Serena Williams and Novak

Djokovic named as top seeds for upcoming US Open

Last year's runner-up Kei Nishikori of Japan was among big names to fall on the opening day of the US Open as Serena Williams got her calendar Grand Slam bid off to a typically comfortable start.

-7, 6-3 for only her second victory since losing at Wimbledon two months ago.Men's world number one Novak

Djokovic demolished Brazil's Joao Souza 6-1, 6-1, 6-1, while eighth-seed Rafael Nadal gained a boost

action is due to continue at Flushing Meadows tomorrow.Related storiesAugust 2015: Serena Williams and Novak

Djokovic named as top seeds for upcoming US Open

American world number one Serena Williams and Novak Djokovic of Serbia are once again the top seeds

the semi-final stage should they be in the same half of the draw, due to take place tomorrow.Novak Djokovic

men's draw for the third year in a row ©Getty ImagesIn the men’s draw, nine-times Grand Slam champion Djokovic

face one of the game’s heavyweights before the quarter-final stage, meaning he avoids the likes of Djokovic

, Federer or Murray until the last eight.The announcement of Williams and Djokovic as the top seeds

three years in a row since Steffi Graf and Ivan Lendl between 1987 and 1989.Related storiesJuly 2015: Djokovic

Novak Djokovic underlined his status as the greatest current player in men's tennis with a clinical four-sets

continue his Indian Summer and claim an eighth title on the lush lawns of SW19.Yet world number one Djokovic

roaring back by winning a sensational second set tie break 10-8 after saving a string of set points.But Djokovic

stayed on top throughout to take it, 6-4.Roger Federer produced some great moments once again, but Djokovic

that bit too strong ©AFP/Getty ImagesIt still seemed possible Federer could find a way back but it was Djokovic

Serena Williams claimed her sixth Wimbledon title today with a straight sets victory over Spanish opponent Garbine Muguruza to complete a "Serena-Slam" of holding all four Major titles at the same time.

defeat to Roger Federer in the semi-finals of the men's singles yesterday.Federer plays world number one Novak

Djokovic of Serbia in the final tomorrow, and in what could perhaps be a good omen, his compatriot Martina

2015: Williams edges Azarenka to set up dream Wimbledon semi-final with SharapovaJuly 2015: Djokovic

Andy Murray in straight sets and set-up a repeat of last year's Wimbledon final with world number one, Novak

Djokovic.

Novak Djokovic stands in the way of Roger Federer securing an eighth Wimbledon title ©Getty ImagesMurray

for the full five sets before he slipped to defeats, against Spain's Rafael Nadal in 2008 and versus Djokovic

bouts of treatment on his left shoulder, something he described afterwards as "nothing to worry about".Djokovic

2015: Williams edges Azarenka to set up dream Wimbledon semi-final with SharapovaJuly 2015: Djokovic