The tournament is without the injured Andy Murray and Stan Wawrinka as well as Novak Djokovic, who has ended his season.
As of 3 p.m. ET on Friday, here are seeded players remaining in the bottom half of the draw: No. 10 John Isner, No. 16 Lucas Pouille, No. 17 Sam Querrey, No. 23 Mischa Zverev, No. 28 Kevin Anderson and No. 29 Schwartzman. "I played good matches but I lost". But Zverev cited his struggles against 710th-ranked Thai-Son Kwiatkowski in a first-round five-setter as a sign that rankings were not predictive, but rather temporary temperature readings of a player's form. I am a little bit old than those guys, but I try to improve every year. It sucks. You want to play better out there.
"It's never great to win this way". The Tennis Channel will be running a preview show between 8 a.m. -11 a.m. ET, along with replays through the days and nights of the tournament. "Hopefully it's nothing too serious".
Garbine Muguruza will have her eyes set on the U.S. Open crown in NY after seeing some of the women's favourites drop out early, and she will face Magdalena Rybarikova for a fourth-round spot on Friday.
Shapovalov will meet the 12th-seeded Pablo Carreno Busta (pictured below) next, as the Spaniard moved past Nicolas Mahut 6-3, 6-4, 6-3 on Friday.
"Obviously I'm super-excited", U.S. ninth seed Venus said.
Whoever triumphs in that matchup has a hard fourth-round fixture on their hands, though, with the victor of Caroline Garcia and Petra Kvitova's meeting up next. "Words can't describe" during a pre-match interview with the host broadcaster, ESPN.
"Someone that's going to be now in the quarters or semis at the U.S. Open this year might be the next top-five player 14 months from now or something", he said.
The 13th-seeded Kvitova is in the fourth round at Flushing Meadows for the third time in a row.
Venus Williams and Garbine Muguruza are among them and try to reach the fourth round by winning Friday.
Russian wildcard Maria Sharapova was victorious in the last match of the day, defeating fellow wildcard Sofia Kenin in straight sets to set up a last 16 clash against last year's quarter-finalist, Anastasija Sevastova.
Two of the others, current No. 1 Karolina Pliskova and Elina Svitolina, will play Saturday.
Kvitova, the 2011 and 2014 Wimbledon champion, enjoyed playing in Arthur Ashe Stadium after needing major left hand surgery following a knife attack by a home intruder last December. "After everything which I've been through it's happy moments for me".
The only past Grand Slam champion in the lower half of the U.S. Open's men's draw is in trouble.
Into the fourth round round of the U.S. open for the first time - which also represents his best ever performance at a Grand Slam, he said afterwards: "There were a lot of ups and downs in the match".
Sharapova, the 2006 US Open victor, has already beaten Halep and Hungary's Timea Babos in her first Grand Slam since serving a 15-month doping ban after testing positive for the blood booster meldonium, at the 2016 Australian Open.