Welcome to The Athletic’s daily World Cup cheatsheet, your guide to which teams are up, which are down — with the data analysis to back it up.We will unpack the key talking points from each matchday and give you the stats you need to stay in the know. And if you want to go deeper, don’t worry, we will point you in the direction of some of The Athletic’s best World Cup coverage.What happened on day six of the World Cup?You’ve seen them in beer ads, sneaker ads and soda ads. You can buy inflatable versions of them to stick in your yard. Heck, your kids are even building them in Lego.The World Cup superstars have been much trailed.So surely this wave of hyperbole would crash against the cold, hard shores of tournament soccer, with its low-block defences and hamstring strains?The answer, it seems, is no. Emphatically no, in fact. This was the day the superstars took the stage and delivered.Erling Haaland’s World Cup debut went extremely well (Justin Setterfield/Getty Images)Act One: Kylian Mbappe. He hit two goals in the 3-1 defeat of Senegal that made him France’s leading overall scorer with 58. It took him to 14 in World Cups, just two behind the record holder, Germany’s Miroslav Klose and, briefly, ahead of Lionel MessiAct Two: Erling Braut Haaland. The Norway goal machine is the new star on the World Cup block. On his tournament debut, Iraq had no answer to him, scoring twice in a 4-1 win.Act Three: Lionel Messi. At nearly 39, could the best to have played the game still cut it with the elite of the elite? No sweat: a hat-trick in Argentina’s 3-0 win over Algeria to take him back past Mbappe to 16 goals in World Cup games and level with Klose for the most goals in the competition’s history. Extraordinary.