The biggest shock of the 2026 French Open arrived earlier than anyone expected as world number one Jannik Sinner crashed out in the second round after a dramatic five-set defeat to Argentina’s Juan Manuel Cerundolo.
For months, Sinner had looked almost untouchable. The Italian arrived at Roland Garros on a 30-match winning streak, having dominated both hard and clay courts during a remarkable stretch that saw him collect five consecutive Masters 1000 titles. With defending champion Carlos Alcaraz injured and absent from the tournament, many viewed Sinner as the overwhelming favourite to finally conquer Paris and complete the career Grand Slam.
Instead, the headline story became “Sinner out of French Open” after a physical collapse in brutal heat conditions turned a comfortable victory into one of the most astonishing reversals in recent Grand Slam history.
Sinner Dominates Before Match Suddenly Changes
For over two sets, the match unfolded exactly as most tennis fans predicted.
Sinner looked calm, sharp, and completely in control on Court Philippe Chatrier. His movement was smooth, his baseline hitting precise, and Cerundolo struggled to handle the relentless pace coming from the Italian’s racquet.
The four-time Grand Slam champion cruised through the opening two sets 6-3, 6-2 while barely giving his opponent any opportunities. Cerundolo managed just one break point during that stretch, and Sinner appeared to be moving effortlessly toward the third round.
The Italian even built a commanding 5-1 lead in the third set, placing him only one game away from victory.
Then everything changed.
Physical Problems Trigger Stunning Collapse
The turning point came suddenly and dramatically.
While serving for the match, Sinner’s energy visibly dropped. His trademark groundstrokes lost pace, his footwork slowed, and his usually composed body language disappeared entirely.
The world number one began walking gingerly between points, stretching his legs repeatedly and bending over in discomfort. His shots, once exploding through the court, suddenly lacked their normal penetration.
Sinner later admitted during the match that he felt dizzy and nauseous.
Television microphones picked up the Italian telling medical staff he “wanted to vomit,” prompting an off-court medical timeout in the middle of the third set.
The extreme Paris heat appeared to take a serious toll. Temperatures exceeded 34 degrees Celsius throughout the afternoon, and Sinner has previously struggled in difficult weather conditions.
Earlier this year at the Australian Open, he battled severe cramping during another intense heatwave and admitted afterward he had been fortunate to survive the match.
Those same physical concerns resurfaced again in Paris, only this time there was no escape.
Cerundolo Keeps His Composure to Kick Sinner Out of French Open
While attention naturally focused on Sinner’s condition, Cerundolo deserves enormous credit for producing the biggest win of his career, while sending world number one, Sinner out of French Open.
Many players would have folded mentally after falling two sets behind against the best player in the world. Instead, the Argentine remained patient and composed.
As Sinner’s level dipped, Cerundolo sensed opportunity.
The world number 56 began extending rallies, forcing the Italian to move constantly across the baseline while carefully avoiding reckless shot-making. His consistency frustrated Sinner further, and the momentum shifted completely.
Cerundolo captured the third set 7-5 after saving himself from elimination multiple times, then stormed through the fourth and fifth sets 6-1, 6-1 as Sinner’s movement deteriorated badly.
The Argentine repeatedly targeted open spaces and forced the exhausted Italian into long physical exchanges he could no longer sustain.
By the final stages, Sinner appeared physically drained and emotionally defeated.
Cerundolo completed the comeback after more than four hours on court, securing his first-ever appearance in the third round of a Grand Slam tournament.
Sinner Out of French Open Leaves Draw Wide Open
Sinner out of French Open and this instantly transformed the entire complexion of the men’s tournament.
Sinner entered Roland Garros as the clear favorite after dominating the ATP Tour for months. With Alcaraz sidelined and several other contenders struggling for consistency, many believed the Italian was destined to finally lift the Coupe des Mousquetaires.
Now the draw suddenly feels unpredictable.
The biggest beneficiary could be Novak Djokovic, who now finds himself with a major opportunity to chase a record-breaking 25th Grand Slam title.
Although Djokovic is no longer in his physical prime at 39 years old, the Serbian legend remains one of the smartest and toughest competitors in tennis history. With Sinner eliminated and Alcaraz absent, the path toward another major title appears significantly clearer.
Other contenders will also sense opportunity.
Players who previously expected to meet Sinner deep in the tournament suddenly have a realistic chance to reach the latter stages of Roland Garros.
Heat Continues to Spark Debate at Roland Garros
With Sinner out of French Open, it will likely reignite debate surrounding scheduling and extreme weather conditions at major tournaments.
Roland Garros organisers made the unusual decision to place the world number one in an early afternoon slot on Court Philippe Chatrier, exposing him to the hottest conditions of the day.
It marked the first time in a decade that a men’s world number one had opened play on the main court before the semi-finals.
Initially, the decision appeared harmless because Sinner dominated the early stages comfortably. But as the temperature rose, the physical demands became increasingly visible.
Tennis continues to face growing concerns regarding player safety in extreme heat, particularly as summer temperatures rise across Europe and Australia.
While heat rules exist, many players believe tournaments still need stronger protections during dangerous conditions.
Sinner Out of French Open: A Painful End to Sinner’s Paris Dream
While it comes as a shock to all that Sinner is out of French Open, this defeat represents a devastating setback in the Italian’s pursuit of tennis history.
The French Open remains the only Grand Slam title missing from his collection, and this tournament looked like his best opportunity yet to complete the career Slam.
Everything appeared perfectly aligned.
His form was outstanding. His confidence was sky-high. His biggest rival was absent.
Instead, Cerundolo sends Sinner out of French Open and the story of Roland Garros 2026 now begins with one of the biggest upsets the tournament has witnessed in years.
Despite the disappointment, Sinner’s season remains extraordinary overall. His consistency across all surfaces has established him as the dominant player in men’s tennis, and few would bet against him returning stronger later this year.
Still, the image of the exhausted Italian hunched over his racquet in Paris will linger for some time.
For now, the headline remains impossible to ignore: Sinner out of French Open in one of the most shocking collapses of the modern Grand Slam era.
