We look at the action from day four at the US Open at Flushing Meadows.
Angelique Kerber had to dig very deep to get in to the next round.
Angelique Kerber of Germany plays against Johanna Larsson of Sweden during Day 4 of the 2018 US Open Women's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2018. (Photo by TIMOTHY A. CLARY / AFP) (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
And so did Petra Kvitova.
NEW YORK, NY - AUGUST 30: Petra Kvitova of The Czech Republic serves during her women's singles third round match against Yefan Wang of of China on Day Four of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Pantling/Getty Images)
Meanwhile, Roger Federer was quietly doing Roger Federer things in Arthur Ashe Stadium.
NEW YORK, NY - AUGUST 30: Roger Federer of Switzerland serves against Benoit Paire of France during his men's singles second round match on Day Four of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)
But spare a thought for Benoit Paire, who just couldn’t get close to the Swiss legend.
Benoit Paire of France returns against Roger Federer of Switzerland during Day 4 of the 2018 US Open Men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2018. (Photo by TIMOTHY A. CLARY / AFP) (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
Frances Tiafoe was putting every drop he had into his match.
NEW YORK, NY - AUGUST 30: Frances Tiafoe of The United States returns the ball during the men's singles second round match against Alex Di Minaur of Australia on Day Four of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
And so was Gael Monfils, although injury would end his chances – again.
Gael Monfils of France runs to hit a return against Kei Nishikori of Japan (off frame) during their 2018 US Open men's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 30, 2018. (Photo by EDUARDO MUNOZ ALVAREZ / AFP) (Photo credit should read EDUARDO MUNOZ ALVAREZ/AFP/Getty Images)
Novak Djokovic was producing some magic in the evening session.
Novak Djokovic of Serbia tosses his racket while playing against Tennys Sandgren of the US (off frame) during their 2018 US Open men's round 2 match August 30, 2018 in New York. (Photo by Don EMMERT / AFP) (Photo credit should read DON EMMERT/AFP/Getty Images)
With the doubles providing their usual brand of under-valued brand of lunacy.
NEW YORK, NY - AUGUST 30: Sabrina Santamaria and Nicole Gibbs of the United States play Alexa Guarachi and Vera Lapko during the women's doubles first round match on Day Four of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)
And the scenery was stunning as ever as the sun set on another brilliant day of tennis.
NEW YORK, NY - AUGUST 30: The view from Arthur Ashe Stadium as the sun sets over New York City on Day Four of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
Second seed Caroline Wozniacki was dumped out in the second round.
Former champion Maria Sharapova felt the heat, but she is stayed alive.