In fantasy parlance, "five-tool" means that a player can contribute across all five offensive categories. There aren't many available, and the good ones will all be snapped up after the first few rounds of your draft.
Building your fantasy team on five-toolers will cost most of your early-round picks, but it's a fantastic strategy if you can pull it off.
Getting well-rounded players early on gives you added flexibility with the rest of the draft. Rather than trying to fill holes, you can take the best player available, knowing you're covered across the board.
Each player on this list has his own strengths and weaknesses, but in order to qualify as a true five-tool player, he must have the ability to deliver the following stat line:
.280 Batting Average
15 Home Runs
15 Stolen Bases