On the women's side, two mothers showcased more high quality play to secure their spots in the US Open quarterfinals. Meanwhile, on the men's side, new faces are going deeper than ever before on the major stage.
These are the Top 5 photos from New York.
Serena avenged her loss to Maria Sakkari from the Western & Southern Open by defeating the Greek, 6-3, 6-7 (6), 6-3, to take one step closer to Grand Slam title No. 24. The 38-year old has noticeably been working on her movement and fitness and it helped her to stay in longer rallies and not opt for risky shots.
Serena's into her 12th straight US Open quarterfinal where she will take on fellow mother Tsevtana Pironkova.
In her first tournament since Wimbledon 2017, Pironkova is into her first US Open quarterfinals. The Bulgarian was just one point away but let the weight of the moment get to her. She would find the confidence to play freely to ultimately post a 6-4, 6-7 (5), 6-3 win against Alize Cornet.
The world No. 3 is not thinking about no members of the Big 3 standing in the way. Thiem is only focused on who's standing across the net. The Austrian fought past a tight first set against Felix Auger-Aliassime to take the match 7-6 (4), 6-1, 6-1. The No. 2 seed will battle Aussie Alex de Minaur next.
Alex de Minaur
The Aussie erased four set points in the first set against Vasek Pospisil to take out the Canadian, 7-6 (6), 6-3, 6-2. De Minaur is through to his first major quarterfinal, and will face the new tournament favorite in Thiem.
"At the end of the day, this is where I want to be, and this is where I truly believe I belong, second weeks of slams and going deep," De Minaur told press. "I'm happy I'm finally at this stage."
The Russian brought the highest intensity and focus to upset Matteo Berrettini. Despite breaking his strings on set point in the third set, he continued to bully Berrettini's backhand and went on to post a 4-6, 6-3, 6-3, 6-3 victory. With a down-the-line backhand and a loud "Vamos!" the 22-year-old secured his spot in the final eight for the second time in his career.