Nuno Mendes
This guy is basically Portugal's turbo-charged defender who's just as dangerous going forward as he is stopping opponents—think of him as the team's Swiss Army knife on the left wing. He's lightning-quick and can sprint past defenders or track back to make crucial tackles, which makes him way more interesting to watch than your typical stay-at-home defender. At this World Cup, he's crucial because Portugal needs him to control that whole left side of the field while also creating chances for their attacking stars. If you're watching the matches, keep an eye out for those moments where he suddenly shifts from defense to offense—it's the kind of play that can change a game in seconds.