New Delhi, May 26 -- Inter Miami captain Lionel Messi has suffered muscle fatigue in his left hamstring, the Major League Soccer (MLS) club confirmed on Monday, raising concerns ahead of the upcoming FIFA World Cup.

Inter Miami said medical tests conducted after Sunday's dramatic 6-4 win over Philadelphia Union revealed an "overload associated with muscle fatigue" in Messi's left hamstring.

"The timeline for his return to physical activity will depend on his clinical and functional progress," the club said in a statement, as per ESPN.

The 38-year-old forward asked to be substituted in the 73rd minute shortly after taking a free kick, having appeared uncomfortable and clutching the upper part of his left thigh. Messi walked off the fiel...