Lionel Messi's Hamstring Fatigue Raises Concerns Ahead of World Cup

Lionel Messi’s left hamstring has become the most scrutinised muscle in world football again.

Inter Miami confirmed the 38-year-old has been diagnosed with muscle fatigue in his left hamstring after he walked off in the 73rd minute of Sunday’s wild 6-4 win over Philadelphia, a substitution that instantly set alarm bells ringing in Argentina and far beyond.

Scaloni watches, waits – and breathes out

On the other side of the continent, Lionel Scaloni watched the game on television from the Argentinian federation’s headquarters. The national coach saw Messi gesture to come off and, crucially, not collapse to the turf.

“Obviously we would have preferred that nothing had happened,” Scaloni told Argentinian TV channel DSports on Tuesday. The honesty framed the mood of a country. Relief, but with a knot of anxiety that refuses to go away.

“Now one has to wait and see how it evolves and above all the new tests they are going to conduct in order to see if it confirms their original diagnosis,” he added.

The message was clear: no panic, but no guarantees either. Scaloni will name his World Cup squad next week, and every medical report from Miami now lands on his desk with the weight of a nation attached.

Miami take no risks with their superstar

Inter Miami manager Guillermo Hoyos moved quickly to calm the noise after the match. Messi, he said, was simply tired, the pitch was heavy, and nobody inside the club wanted to flirt with disaster by forcing him through the final minutes.

On Monday, the club’s medical bulletin arrived. It confirmed muscle fatigue and little else.

“The timeline for his return to physical activity will depend on his clinical and functional progress,” read the statement. No dates. No promises. Just a reminder that even an eight-time Ballon d’Or winner must obey the limits of his body.

Messi has been carefully managed since he arrived in MLS in 2023. Inter Miami’s staff have regularly excused him from matches during congested runs of fixtures, aware that every sprint he saves in June could matter in December — and, this year, in June again.

MLS has now paused for the World Cup, co-hosted by the United States, Mexico and Canada. For Miami, that break is a blessing. For Argentina, it is a window. How Messi uses it will shape the entire tournament.

A sixth World Cup in the balance

Even at 38, eyeing what would be a record-matching sixth World Cup finals appearance, Messi remains the axis around which Argentina spin. Four years after lifting the trophy in Qatar, he is still the talisman for a side attempting to defend their crown.

He has not yet formally confirmed he will play at this World Cup, but the expectation is overwhelming that he will return for one last tilt at history. If he does, he will stand alongside Cristiano Ronaldo and, potentially, Mexican goalkeeper Guillermo Ochoa on six appearances at the finals — a tiny, elite club defined by longevity and obsession.

Argentina’s route is already mapped out. They open their World Cup campaign on June 16 against Algeria in Kansas City. Six days later comes Austria on June 22. Group J closes against Jordan on June 28.

Before that, there is work to do. Two friendlies in the United States — against Honduras on June 6 and Iceland on June 9 — are designed to sharpen legs and minds, to tune the champions for another month under the harshest spotlight. Whether Messi features heavily, lightly, or at all in those games will tell its own story.

Argentina holds its breath

For now, the diagnosis is “muscle fatigue” and the tone from Miami is conservative. No talk of tears or strains, only of monitoring, progress and caution.

The image that lingers, though, is of Messi walking off in Philadelphia, choosing discretion over defiance. Scaloni called it a relief that his captain asked to come off. In that decision lay the understanding of a player who knows his body, and a World Cup that will not forgive miscalculation.

Argentina can plan, adjust, and rehearse alternatives. They can shuffle systems and test deputies. But there is no like-for-like replacement for Lionel Messi.

The next medical update from Miami will not just shape Inter’s short-term plans. It could tilt the balance of an entire World Cup summer.