It was another day of breath-taking tennis on Day 9 at the US Open as we witnessed one of the biggest upsets of the tournament as Grigor Dimitrov came back from a set down to beat Roger Federer to enter the semis.
Earlier, America’s darling Serena Williams marched into the semis with a 6-1, 6-0 thrashing of Chinese Wang Qiang. While these big guns went about their business, they received some cheering and support from superstars from other fields.
Here's a peek at the stars who came out to cheer the tennis stars…
IMAGE: Golfer Tiger Woods applauds Serena Williams after her win over Wang Qiang. Photograph: Mike Stobe/Getty Images
IMAGE: Hollywood actress Queen Latifah, right, shares a laugh with friends, while the she attends the match between Serena Williams and Wang Qiang. Photograph: Elsa/Getty Images
IMAGE: Singer and actor Vanessa Williams, centre, attends the the quarter-final between Serena Williams and Qiang Wang. Photograph: Elsa/Getty Images
IMAGE: Muliple Grand Slam champion Boris Becker was present at the Roger Federer-Grigor Dimitrov quarter-final. Photograph: Elsa/Getty Images
IMAGE: Anna Wintour, editor of Vogue and a favourite of tennis royalty, read Roger Federer and Serena Williams, watched her friend Federer lose to Dimitrov. Photograph: Elsa/Getty Images
IMAGE: Japanese-American ice dancer and Olympic medalist Alex Shibutani seems to be enjoying the action from the men's quarter-final between Roger Federer and Grigor Dimitrov. Photograph: Elsa/Getty Images
IMAGE: American fashion designer, Vera Wang was watching as Serena Williams thrashed Qiang Wang in the quarter-final. Photograph: Elsa/Getty Images
IMAGE: American businesswoman, writer and television personality, Martha Stewart at the Serena Williams-Qiang Wang quarter-final. Photograph: Elsa/Getty Images