Have you ever played fantasy football? It is where you act like a manager of a football team and compete against other people.
I have.  I actually have played for a couple of seasons.  I normally use ESPN for my fantasy leagues
Cool, the players choose rosters during a draft at the beginning of the season where all NFL players are chosen.
Yes.  There are many types of drafts.  There are auto pick drafts, snake drafts, and auction drafts
Fantasy football (American)
Fantasy football is a game in which the participants serve as the general managers of virtual professional gridiron football teams. The competitors choose their team rosters by participating in a draft in which all players of a real football league are available. Points are based on the actual performances of the players in the real-world competition. The game typically involves the National Football League, Canadian Football League, American Alliance of Football or college football.
There are two main types of fantasy football:
-
told ESPN "I think it's ruined the game", and retired New York Giants RB Tiki Barber said about fantasy fans, "there's an incongruity in the wants." However, former Washington Redskins tight end Chris Cooley plays in four fantasy football leagues himself, and former Indianapolis Colts linebacker Cato June benched New England Patriots quarterback Tom Brady from his fantasy team to avoid a conflict of interest when the two teams played in November 2006. Fans frequently ask players on their fantasy rosters to score more often; Peyton Manning