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Madison Keys pulled off a stunning comeback to defeat Naomi Osaka, while Jack Sock beat 2014 champ Marin Cilic on U.S. Open Day 5.

By Jamie Lisanti
September 02, 2016

NEW YORK – A recap of the action on Day 5 on Friday at the 2016 U.S. Open, including results, tweets, hot shots, photos and more.

Results Roundup

• 21-year-old American Madison Keys pulled off what she classified as the greatest comeback of her career on Friday afternoon on Arthur Ashe Stadium. Eighth-ranked Keys had to fight to take the opening set off the 18-year-old but appeared to be in control of the match. But Osaka stuck in, keeping her composure and returning Keys’ big hits with some power tennis of her own. The American hit 17 unforced errors to Osaka's eight in the second set, and Osaka went on to force a decider. 

In the final set, No. 81-ranked Osaka jumped out to a early lead and was within two points of the win. But Keys, from 1-5 down, fought back to the level the set at 5-all and ultimately won the match in the final set tiebreak, 7-5, 4-6, 7-6(3).

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"No matter what the score was, I was always just trying to get back in the match," Keys said. "Once I was able to get a little bit of momentum I felt like I found my game a bit more. At that point I knew I had to kind of step up or else I was going to be going home."

In her opening match on Monday, Keys also came back after being two points from losing. 

"I think the biggest thing is I'm never giving up and I'm fighting to the very end. That's something to pat myself on the back for," she said. "But also definitely going to sit down later and work on some things for the next round because I don't want to be two points from losing again. Really looking forward to trying to have straightforward matches."

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Keys will move on to play No. 74 Caroline Wozniacki (their first career meeting) after the two-time U.S. Open finalist defeated Monica Niculescu 6-3, 6-1 in the day’s opening match on Arthur Ashe. 

“I think today I was just satisfied with how I just managed to focus the whole way through,” Wozniacki said after the match against Niculescu, who she said is a “a frustrating player to play” because of her unconventional game style which features a signature forehand slice and dropshots. It feels great to be back here. It feels like my back garden and everything feels so familiar and everybody is so friendly and so nice. All these things help you just play better, as well, when you feel welcome at a place.”

Friday’s win puts No. 74-ranked Wozniacki into the fourth round at a Grand Slam for the first time since Wimbledon 2015. 

• There must be something about the U.S. Open that clicks with Roberta Vinci. The Italian is into the fourth round for the fourth time at the U.S. Open; she’s only reached the Round of 16 three other times at the other Grand Slams.

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After cruising through her first two matches, the No. 7-seed ran into a little more trouble on Friday against Carina Witthoeft. Vinci started out the match by winning the first set without dropping a game, but she ended up needing almost two hours, and three sets, to close out the win. As last year’s runner-up, World No. 8 Vinci comes into the tournament with a lot of ranking points to defend.

“I think a lot about the ranking, about the points,” she said after the match. “Right now I don't know how many points I won today, really….I want to continue. I want to play another great match for the next round, and then we will see. I don't want to think about the ranking right now.”

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• After shocking No. 3-seed Garbine Muguruza on Wednesday night on Arthur Ashe, Latvia’s Anastasija Sevastova followed her upset with a 6-4, 6-1 win over Kateryna Bondarenko to advance to the fourth round. Sevastova has only reached the Round of 16 once before in her career, at the 2011 Australian Open. Sevastova’s win over Muguruza marked her first win over a top-10 player since 2010 and only the third of her career.

• No. 9-seed Jo-Wilfried Tsonga defeated No. 23-seed Kevin Anderson 6-3, 6-4, 7-6 on Friday to advance to the fourth round at the U.S. Open for the fourth time in his career. Tsonga, a quarterfinalist here last year, will face No. 26-seed Jack Sock in the next round. The American knocked out 2014 U.S. Open champion and No. 7-seed Marin Cilic 6-4, 6-3, 6-3 to advance to the fourth round at the U.S. Open for the first time in his career. Tsonga and Sock have only met once in their careers, with the Frenchman winning in three sets in Madrid in May 2015. 

•  No. 14-seed Petra Kvitova is into the second week at a major for the first time this year after defeating No. 22-seed Elina Svitolina 6-3, 6-4, to advance to the fourth round. The Czech has not dropped a set so far in the tournament, beating Jelena Ostapenko, Cagla Buyukakcay and Svitolina all in straight sets.

Kvitova awaits the winner of No. 2 Angelique Kerber and 17-year-old American CiCi Bellis, the second night match on Arthur Ashe on Friday.

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• After getting a walkover into the second round after Jiri Vesely withdraw with a left forearm injury, Novak Djokovic once again advanced without playing a complete match. Down 2-4, his third-round opponent Mikhail Youzhny retired with a left leg injury, putting Djokovic into the fourth round.

Djokovic will face the winner of No. 20-seed John Isner and Britain’s Kyle Edmund, playing in Friday’s final match on Louis Armstrong. 

• No. 10-seed Gael Monfils moved through to the fourth round with a 6-4, 6-2, 6-4 win over Nicolas Almagro. He'll next face Marcos Baghdatis, who beat American Ryan Harrison 6-3, 7-6, 1-6, 6-1 on Friday. 

Lesia Tsurenko d. No. 12-seed Dominika Cibulkova: 3-6, 6-3, 6-4; Johanna Konta d. Belinda Bencic 6-2, 6-1

Tweets of the Day

Snapshots from Day 5

Daily Data Viz

Andy Lyons/Getty Images

A look at 2014 U.S. Open Marin Cilic's stats from when he won the title two years ago, compared to his play so far through two matches in 2016.

This post will be updated.

Eagle (-2)
Birdie (-1)
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Double Bogey (+2)