Kolkata, June 3 -- Work stopped and the murmurs grew louder in the media tribune of Doha's Lusail Stadium as Lionel Messi gingerly felt the back and side of his left leg. Argentina were leading 2-0 against Croatia, a World Cup final beckoned, but you didn't need to know Spanish to understand the general line of inquiry, which was: Is everything alright with Leo? For Argentine journalists and fans, he is always that. Never Messi. Then, in the 69th minute, Messi went on a run that left Josko Gvardiol chasing a crooked shadow. The young central defender's leadership and ball-carrying abilities had been widely praised but Messi spun him twice. Such chaos Messi spread in the Croatia penalty area that Julian Alvarez was left unmarked. As suddenly...