Julio Morban

A broken leg ended Morban's season in August last year, but not before he proved that his gaudy 2012 stats weren't merely the product of the hitter-friendly California league. At Double-A Jackson last season, Morban slugged 32 extra-base hits, including seven home runs. He has a quick bat and can hit to all fields. He must overcome two big problems, however, to keep advancing – health and plate discipline. He's struggled with injuries through his minor-league career, and last year his strikeout rate spiked to 29.1%. Still just 22, time is on his side. The Mariners signed him out of the Dominican Republic for $1.1 million in 2008 and last year added him to the 40-man roster, so obviously they have a lot invested him and think highly of his future.