The Most Shocking Upset of the 2026 US Open First Round Isn’t the One You Think
Yes, Novak Djokovic lost in the first round of the US Open. A 39-year-old playing his first Grand Slam match on hard in months, seeded fourth on his reputation more so than his form, went down against Mariano Navone over four hours and 36 minutes and ended a run of 84 consecutive Grand Slam wins in the first round stretching back twenty years. It is a significant story. It will dominate the conversation for days.
It is not the most shocking result of the opening week.
Wait, What Was the US Open’s Most Shocking Upset?
The US Open upset that should genuinely unsettle people, the one that deserves to be examined, is Stefanos Tsitsipas beating Arthur Fils 4-6 7-6 6-1 6-4. Not because upsets don’t happen at Grand Slams. They do, constantly, and the first round always produces them. But because of what this result means for both men, what it says about where Tsitsipas is right now, and what it confirms about a narrative surrounding Fils that has been building for two years.
The Head-to-Head Said This Shouldn’t Happen
Start with the numbers, because they are extraordinary.
Fils led the head-to-head 5-0 going into this US Open first-round match. He was 3-0 against Tsitsipas specifically on hard courts. In their most recent meeting, in Miami in March, Fils dismantled him 6-0 6-1 in 55 minutes flat, one of the most one-sided results between two tour regulars in a Masters 1000 event all year. That was a complete destruction of a player who has twice reached Grand Slam finals and was a top-five player as recently as two years ago.
The Miami match told you everything about the dynamic between these two players. Fils, with his heavy forehand, his relentless aggression from the baseline, and his ability to take the ball early and deny Tsitsipas time, was the exact kind of opponent the Greek’s game could not handle.
Tsitsipas plays his best tennis when he has space and time, and when he can load up and drive his one-handed backhand crosscourt. Fils refuses to give any of that to him. He takes the court away, he shortens the points, and he applies pressure before Tsitsipas can set his feet. The 6-0 6-1 in Miami was simply the natural product of a stylistic mismatch that went one way.
And yet, somehow, on Monday at the US Open, it went the other way.
What Tsitsipas Has Been Through
To understand what the US Open win means for Tsitsipas, you have to understand how bad the last two years have been. This is a player who won his twelfth ATP title in Dubai at the start of 2025, who was world No. 8 at the Monte Carlo Masters that April, and who then fell apart so completely that he ended 2025 ranked No. 36, winning just two Grand Slam matches across the entire calendar year.
A recurring back injury wrecked his season from Barcelona onward, forcing him to retire mid-matches, pull out of tournaments, and eventually end his year entirely in September. He could not walk for two days after losing at the 2025 US Open. His future in the sport seemed in doubt.
He came back in 2026, but the road back was not smooth. He lost his Dubai title defence early. He fell to a first-round defeat at Monte Carlo. By the time he reached Munich in the spring, many were calling his situation incredibly alarming. He had only three tour-level wins since May, going into Gstaad in July. At that point he had slipped to a ranking he had not seen since he was 20 years old, competing on the fringes of the top 50.
Gstaad was where something clicked. He won the title, his first in more than a year, grinding through four three-set matches including the final against Raphael Collignon. It was an ATP 250 on clay, and the field wasn’t loaded. But he won, and he won it by being mentally present in tight moments in a way he had not managed for the better part of eighteen months.
He arrived at the US Open ranked 53rd, unseeded for the first time in his career at this tournament across nine previous appearances, with a match record of 24-18 for the year, 50-50 at Masters 1000 level, and a Gstaad title that felt more like a first step than a genuine revival.
Then he beat the Cincinnati champion in the first round of the US Open, coming from a set and 5-3 down to win three sets in a row, finishing with 50 winners.
How the Match Turned
The first set in front of the US Open fans unfolded exactly as the head-to-head suggested. Fils was aggressive, Tsitsipas was passive, and the Frenchman took it 6-4 with his trademark heavy forehand doing most of the damage. When Fils pushed to 5-3 in the second, the script was writing itself. Tsitsipas was heading towards a routine defeat by the player who had dominated him so completely all year, and the crowd had no particular reason to expect anything different.
Then Fils tightened. He tried to serve out the second set and double-faulted at a critical moment. Tsitsipas broke, held, and suddenly the second set was level. The tiebreak was no contest. Tsitsipas took it 7-3, stepping into his forehand with a freedom that had been absent for most of the preceding set, and when the tiebreak ended the complexion of the match had shifted entirely.
The third set was 6-1. The fourth was 6-4 with a break early. By the closing stages, Fils was smashing his racket in frustration, and Tsitsipas was walking off Louis Armstrong Stadium with a result that almost nobody had penciled in.
Fifty winners. Three sets won in a row after staring at a two-set deficit. It was a performance that reminded you Tsitsipas has genuine tools and that the game which reached two Grand Slam finals is still in there somewhere.
What This Confirms About Fils
Here is where the analysis has to be honest, because the Tsitsipas story is only half of what his Monday US Open result means. The other half belongs to Fils, and it isn’t comfortable.
He arrived at the US Open ranked 10th in the world, seeded 10th, on the back of the best month of his career. He had won Cincinnati with a 6-3 1-6 6-0 demolition of Frances Tiafoe in the final, having beaten Lehecka, de Minaur, and Cobolli along the way, three top-ten players inside a single week. He was the fifth man in the ATP Race. He had a 32-10 record for the year and was coming in on a six-match winning streak. He had the form, the momentum, and a first-round opponent ranked 53rd in the world whom he had beaten five times, without dropping a set in three of them.
And he lost in four sets, from a position of 5-3 in the second, by failing to close out the match when he had every opportunity to do so.
And yet it was predictable.
The Last Word
Fils has been excellent at the Masters 1000 level this year. He has been excellent on clay, winning Barcelona on his return from an eight-month back injury. He reached Masters semi-finals in Miami and Madrid. He is clearly a player capable of beating anyone in the world in a given week. What he has not been able to do, across his entire career to date, is translate that into a genuine Grand Slam run.
His Grand Slam record tells the story completely.
He reached the fourth round at Wimbledon in 2024, his best result at a major to date, and never matched it again. He retired in the third round at the Australian Open in 2025 with an ankle injury. He retired before the fourth round at Roland Garros 2025 with his back. He then missed everything from Wimbledon 2025 through to Roland Garros 2026 with that same back issue. He returned at Wimbledon this year, drew Berrettini in the second round, and lost. And now, at the 2026 US Open, coming in as a top-10 seed with a Masters 1000 title eight days old, he lost to Tsitsipas in the first round.
He has never reached a Grand Slam quarterfinal. He is 22 years old with five ATP titles, including a Masters 1000, and the Grand Slams have produced nothing but early exits and retirements. The level he shows at the Masters events simply hasn’t shown up at the majors, and the pattern is now consistent enough to be named rather than explained away.
At some point, the question stops being about injury timing, bad luck, or first-round draws and becomes something more fundamental. Arthur Fils can win Cincinnati. He just cannot, yet, back it up where it counts.
Main Photo Credit: Jerry Lai – USA TODAY Sports
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