No. 3 Auger-Aliassime stunned at US Open: When ranking doesn't mean victory

New York, September 4, 2026 – I have documented thousands of matches in my career, but there are always moments that make me pause. The match between Felix Auger-Aliassime and Karen Khachanov in the third round of the US Open last night was one of those. Not because the scoreline was shocking – although the elimination of the No. 3 seed is always a shock – but because of the way the match unfolded. A 26-year-old player, at the peak of his career with a world ranking of No. 3, collapsed in a way I haven't seen from a top player since I followed Tim Cahill in Moscow in 2026.

The match began with a tense tiebreak that Auger-Aliassime won 7-5. It was a champion's moment – holding composure in decisive points. But then, like a tragic play, everything collapsed. In the next three sets, Khachanov, the 30-year-old Russian, swept past his opponent 6-3, 6-2, 6-2. In total, after the first set, Khachanov won 18 games while Auger-Aliassime won just 7.

I remember that morning, sitting in the corner of Louis Armstrong Stadium, watching Auger-Aliassime practice. He moved smoothly, served powerfully, and seemed to be in his best form. But tennis isn't just about what you show in practice. It's about how you react when pressure builds. And last night, Auger-Aliassime revealed a fundamental weakness I have documented many times: the ability to maintain peak level across five sets.

The context of this match amplifies the surprise. The 2026 US Open is witnessing an unprecedented wave of top-seed eliminations. Novak Djokovic, the 39-year-old with 24 Grand Slam titles, lost in the first round – the first time in his career. No. 1 seed Alexander Zverev barely avoided becoming the first top seed to lose in the first round since 2026, needing five sets to overcome Lorenzo Sonego. And now Auger-Aliassime, the No. 3 seed, was eliminated in the first week.

But I don't believe in coincidence. When a tournament sees so many top seeds eliminated early, it signals a systemic shift. Perhaps it's the demanding North American hard-court schedule – the back-to-back Masters 1000 events in Montreal and Cincinnati leading into the US Open. Perhaps it's a generational transition happening more rapidly than we thought. Or perhaps, as I've documented in my notebook, younger players are learning to beat their elders with smarter play, not just stronger play.

The key insight of this match isn't that Auger-Aliassime lost, but how he lost – a complete physical and mental collapse after winning the first set.

Let me analyze more closely. In the first set, Auger-Aliassime won the tiebreak 7-5. That shows he won the most important points. But from the second set onward, everything changed. Khachanov began standing deeper to return serves, targeting Auger-Aliassime's backhand wing – a weakness I've noted for years. He also stepped in to attack second serves. The result was that Auger-Aliassime's first-serve percentage certainly dropped dramatically, though I don't have specific match data to confirm.

This brings me to a contrarian view: Auger-Aliassime losing to Khachanov isn't truly an upset when you look at their head-to-head history and playing styles. Khachanov reached the 2026 US Open semifinals, beating top-5 players on hard courts. He won the Paris Masters in 2026. His aggressive baseline game – flat, heavy groundstrokes – is the ideal weapon on the fast hard courts of the US Open. Meanwhile, Auger-Aliassime's all-court game, while versatile, is vulnerable to flat, powerful hitters like Khachanov.

I've witnessed this many times in 16 years of covering tennis. There are players ranked high based on results at 500 and 250-level events, but who fail to show corresponding class at Grand Slams. Auger-Aliassime, despite reaching the 2026 US Open semifinals, has yet to win a Grand Slam title. His No. 3 ranking, in my observation, is built on consistency at smaller events, not major victories at the most prestigious tournaments.

Meanwhile, the presence of Learner Tien at No. 14 – a young American – along with Taylor Fritz at No. 9, suggests a new generation of American tennis is rising. And from another angle, Monfils' victory on his 40th birthday – with plans to retire after this year – adds another layer of drama to the tournament.

As I left Louis Armstrong Stadium last night, I couldn't help thinking about a phrase I often write in my notebook: "The first match doesn't decide a career, but it decides how you listen to every match after." For Auger-Aliassime, this defeat isn't the end, but it raises big questions about the future. Will he change his coaching team? Will he find a way to maintain his level across five sets? Or will he remain a top-5 player who never wins a Grand Slam?

As for Khachanov, I see a player in his rhythm. He doesn't need to run the fastest, but he arrives at the right time – like Tim Cahill in Moscow in 2026. When the locker room no longer echoes with footsteps, I hear the match's heartbeat most clearly. And last night, that heartbeat belonged to Karen Khachanov.

The 2026 US Open is witnessing a major upheaval. With Djokovic and Auger-Aliassime eliminated early, and Zverev nearly losing in the first round, the tournament is opening opportunities for less-heralded players. Are we witnessing a true power shift in men's tennis? Or is this just an anomalous tournament? I will continue documenting, continue observing, and continue keeping rhythm with my pages – because the ball rolls and forgets its path, but the page never does.