Lionel Messi was substituted in the 73rd minute of Inter Miami's MLS (Major League Soccer) clash against Philadelphia Union on Sunday after clutching the back of his left leg, raising alarm ahead of the FIFA World Cup. The 38-year-old Argentine star headed straight down the tunnel following his exit, with no immediate explanation from the club, though Miami went on to win the game 6–4. The injury scare is particularly significant as the World Cup — co-hosted by the United States, Canada, and Mexico — kicks off on June 11, with Argentina, the defending champions, set to face Algeria in their opening match on June 16; Messi is widely expected to make a record-equalling sixth World Cup appearance.