Top seed Serena Williams’ quest for a calendar grand slam cam to a shocking end on day 12 at the US Open after Roberta Vinci stunned the American to advance to her first ever grand slam final.
The 2014 US Open champion got off to an explosive start as she comfortably won the first set but Williams began to hit uncharacteristic errors as Vinci fought back to level things up to take the match into a decider.
It looked like Williams would fight back after going 2-0 up in the third set but Vinci hit back with an instant reply to break Williams and another break point in the seventh game as enough for Vinci to clinch a shock 2-6 6-4 6-4 victory.
World number 26 Flavia Pennetta booked her place in her first grand slam final after she shocked second seed Simona Halep to set up an all-Italian final with Roberta Vinci.
Romanian Halep was favourite to beat Pennetta but the 33-year-old controlled the match from the offset winning in straight sets 6-1 6-3 as Halep struggled to find form against the Italian.
Halep showed glimpses of a fightback at the start of the second by heading into a 3-1 lead but errors proved costly for the second seed as Pennetta strung together 15 points in a row to help her to a stunning victory.
In men’s action, world number one Novak Djokovic oozed class as he reached another grand slam final after comfortably beating 2014 champion Marin Cilic.
The Serbian took just 85 minutes to hammer Cilic, as Djokovic inflicted the heaviest ever grand slam semi-final defeat on the Croatian trumping Leyton Hewitt’s record from 2001 US Open when the Aussie beat Yevgeny Kafelnikov 6-1 6-2 6-1.
The defending champion managed to win just three games in the entire match as Djokovic won six consecutive games in the first set for a bagel as the top seed cruised to a 6-0 6-1 6-2 victory.
He will face a familiar opponent in the shape of Roger Federer in the final on Sunday as the world number two outclassed fellow Swiss man Stan Wawrinka to move closer to an 18th grand slam title.
The French Open champion did put up a better showing than Cilic but Federer was just too good for Wawrinka as the 34-year-old marched to a comfortable 6-4 6-3 6-1 straight sets victory to set up a final with Djokovic.
This meeting comes just over two months from their final at Wimbledon where Djokovic denied Federer a first grand slam since 2012. This match will be too close to call but defeat to Djokovic at Wimbledon might be an extra incentive for the Swiss man to win a sixth US Open title.