New Delhi, May 26 -- Inter Miami confirmed Monday that Lionel Messi has a left hamstring issue, one that has popped up about a week before defending World Cup champion Argentina is set to begin its training camp for this summer's title defense.

And the events of Sunday and Monday surely add at least a bit of intrigue to Argentina's plans.

Messi underwent testing on Monday - which almost certainly means an MRI exam, though the team did not divulge what procedures were involved - and was ultimately diagnosed with "an overload associated with muscle fatigue in his left hamstring" that kept him from finishing Inter Miami's match on Sunday night.

Typically, the timeframe for recovery from such issues is varied depending on the severity.

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