Dani Olmo
This Spanish midfielder is basically the creative engine that makes his team's attack work—he's got silky passing skills and isn't afraid to take on defenders one-on-one. At this World Cup, Spain is counting on him to unlock defenses and create chances for strikers, which means he's one of the key players determining whether Spain makes a deep run. If you're watching Spain play, keep your eyes on him whenever the ball gets near the opponent's box—he's the guy orchestrating the action and making things happen in the middle of the field. He's young, technical, and plays the kind of intelligent, flowing soccer that makes Spain fun to watch.