Incident happened when Inter Miami met Philadelphia Union Argentinian lashed out at Quinn Sullivan in 2-2 draw Lionel Messi has been fined for slapping an opponent during a Major League Soccer game. The 39-year-old Inter Miami forward lashed out at Quinn Sullivan of Philadelphia Union during their match on Wednesday, catching the midfielder around the back of the head. The Argentinian appeared to be angry Sullivan had elbowed him after he had played the ball, with the referee intervening before…