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Adalberto Mondesi, Royals

After hitting just 34-188 (.181) during his first two seasons with the Royals, Mondesi was much improved after being called up in mid-June last year. In 75 appearances, he hit .276 with 14 home runs and 32 stolen bases. Despite the improved hitting, he had just 11 walks compared to 77 strikeouts. A smooth fielder, the 23-year-old utilizes his excellent speed to reach balls most shortstops can't.