But more than that, Flagg has the ultracompetitive mindset that leads great players to make the leap to the pro level right away. Karabell: Flagg is going to be a valuable fantasy option this season, perhaps the only first-year player we can really count on. 1 fantasy game for free Create or join a fantasy basketball league on ESPN. Moody: Flagg should be an instant-impact player in fantasy hoops, so I'm in. In fantasy, you want a player who can score, rebound, pass and contribute defensively, and Flagg fits the bill.