Roster management is a crucial tool in fantasy baseball. One of my weaknesses is not churning my roster. Every year it seems like I'm holding a couple of young players that could make a difference later in the year. The longer I keep them and get no production from that roster slot, the more opportunities I miss when valuable players are on the waiver wire.
Some of the best fantasy owners in today's games are excellent churners of the roster. They don't get emotionally tied to any player on their bench. They understand a player's skill set, and they know the replacement value on the waiver wire.