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Billy Hamilton, Royals

Hamilton is one of the fastest players in the game, but also provides little else on offense. In 153 games with Cincinnati last year, he hit .236 with four homers, 16 doubles, nine triples, and 34 steals. While he has averaged nearly 53 stolen bases per year over the last five seasons, he also owns only a .629 OPS over that time. The 28-year-old's speed allows him to chase down balls in center field that others at his position can only dream of catching.