Johermyn Chavez

Chavez enjoyed a breakout season in 2010 but his wilting last season suggests his big year was simply a product of the hitter-friendly California League. At High-A High-Desert two years ago, Chavez stroked 69 extra-base hits with a .964 OPS while hitting .315. Those numbers tumbled off the board last season at Double-A Jackson as Chavez had just 33 extra-base hits, a .672 OPS and a .216 average. Chavez's plate discipline continues to be a problem (49:124 BB:K) and his base running his poor, too. In his four-year minor league career, Chavez has been caught stealing 29 times in 60 attempts. He's only 23, and the Mariners like him enough to keep him on the 40-man roster, but he needs to make significant strides this season.