American Sebastian Korda delivers the season’s biggest upset, defeating Carlos Alcaraz 6-3, 5-7, 6-4 in the third round at Miami.
Sebastian Korda has delivered the biggest shock of the 2026 tennis season. The American, currently ranked 36th in the world, defeated world No. 1 Carlos Alcaraz in the third round of the Miami Open on Sunday. The final score: 6-3, 5-7, 6-4 in two hours and 19 minutes.
A Match Nobody Saw Coming
It was a scoreline that defied every prediction. Korda, the 25-year-old American son of Czech tennis legend Petr Korda, arrived at Hard Rock Stadium in Miami Gardens with a singular purpose: to compete at the highest level and, improbably, to win against the sport’s most dominant player.
From the opening service game, Korda made his intentions crystal clear. The American dominated the first set with aggressive baseline play and an exceptional serve that repeatedly found the corners. A commanding 6-3 scoreline announced his arrival as a legitimate threat, silencing any doubters in the stadium who may have questioned his credentials.
Alcaraz, however, is a champion for a reason. The 22-year-old Spaniard recalibrated his approach in the second set, finding his rhythm and introducing the variability that has defined his rise to the top of the rankings. He leveled the match with a hard-fought 7-5 victory, sending the Miami crowd into a frenzy as they witnessed the epic contest they had hoped to see.
But Korda demonstrated the mental fortitude required to compete against the world’s elite. At 4-4 in the deciding third set, the American manufactured the crucial break that would prove decisive. He sealed the greatest victory of his career with a powerful forehand winner, claiming the third set 6-4 and earning one of 2026’s most stunning upsets.
A Bitter Blow for the World No. 1
For Alcaraz, this early exit represents a significant setback in what has been a volatile start to 2026. The Spanish champion, who reached all four Grand Slam finals in 2025 and finished the year as world No. 1, had circled Miami as a non-negotiable tournament. Instead, he finds himself packing his bags early, defeated by an opponent ranked 35 places below him on the ATP ladder.
The loss compounds recent disappointments. Alcaraz suffered a semifinal exit at the Australian Open in January and could manage only a quarterfinal appearance at Indian Wells. Questions are beginning to circulate about whether his previously untouchable dominance has finally cracked under the relentless pressure of modern professional tennis.
However, seasoned analysts urge perspective. “Carlos has endured an extraordinarily demanding season behind him,” explained tennis expert Boris Becker in commentary for Eurosport. “The brief respite between tournaments sometimes simply isn’t sufficient for full recovery. But I would never write off this champion.” The consensus among experts remains cautiously optimistic about Alcaraz’s prospects, though undoubtedly his aura of invincibility has been tarnished.
Korda’s Breakthrough Moment
Sebastian Korda is far from unknown in professional tennis circles. As the son of Petr Korda, the 1998 Australian Open champion, and brother of Nelly Korda, currently the world’s top-ranked professional golfer, athletic excellence runs deep in the family DNA. Yet for years, Sebastian labored in the shadows—first overshadowed by his legendary father’s achievements, then by his sister’s meteoric rise in professional golf.
That narrative fundamentally shifts at Miami 2026. Following a solid start to the season with consistent results on the ATP Tour, Korda has now announced his arrival in emphatic fashion. His game has matured considerably, gaining the consistency that separates contenders from champions. Most significantly, his serve—already regarded as a formidable weapon—has evolved into a weapon of precision and devastating power.
“I gave everything today,” a visibly emotional Korda said immediately after the victory. “To beat the world No. 1 here in Miami, in front of the American fans—it’s indescribable.”
The Miami Draw Widens Open
With Alcaraz’s unexpected departure, the Miami Open draw has fundamentally shifted. Jannik Sinner, the defending champion from Indian Wells, has emerged as the clear favorite to lift the trophy. The Italian, already safely ensconced in the quarterfinals, has delivered commanding performances throughout the tournament.
Alexander Zverev, the German world No. 2, is also making his presence felt. He convincingly dispatched Quentin Halys and stands as a genuine threat to reach his first Masters 1000 final of the season.
Korda now faces a manageable opponent in the round of 16, with potential quarterfinal matchups against either Sinner or Zverev looming. The American has positioned himself to make a genuine deep run at a Masters 1000 event—something that would have seemed unthinkable just days ago.
One certainty remains: Sebastian Korda has etched his name into Miami Open folklore. Defeating the world No. 1 is not something one forgets. And perhaps, just perhaps, this is merely the opening chapter of a remarkable 2026 campaign for the American with deep Czech roots. The Miami Open continues through March 29, with quarterfinals scheduled for March 25-26, semifinals on March 27, and the final on March 29.
This article was created with the help of AI and editorially reviewed. Report an issue