Trent Alexander-Arnold
This English right-back is basically a video game character come to life—he's got ridiculous speed, pinpoint passing accuracy, and can deliver crosses from anywhere on the field that other players can only dream about. At the World Cup, he's crucial because England's whole attacking strategy often flows through him, so if he's clicking, the team's dangerous. What casual fans should watch for is how he creates chances from the sideline (it's basically his superpower), and how defenders have to constantly adjust their game plan just to deal with him. He's the kind of player who makes highlight reels even when his team isn't scoring.