Questions about Messi's availability surfaced after he limped off during an MLS match against the Philadelphia Union in late May. Medical assessments later determined he was dealing with muscle fatigue in his left hamstring rather than a more severe setback.
Messi has scored 13 goals across his World Cup career, making him Argentina's all-time leading scorer at the tournament. Argentina has been drawn into Group J alongside Algeria, Austria, and Jordan. The team's campaign opens on June 16 against Algeria in Kansas City.
