"In announcing a three-year deal with SS Elvis Andrus Wednesday afternoon that will control his salary until he's eligible for free agency following the 2014 season, the topic of improvement came up.

Offensively, Andrus has only marginally improved during the first three years of his career. After going backward in the leadoff spot in 2010, he did make a step forward in 2011, particularly where it came to driving the ball. His slugging percentage jumped from .301 to .361, but that was still lower than the .373 mark in his rookie year. Overall Andrus' on-base-plus-slugging percentage has gone from .702 as a rookie to .643 in 2010 to .708 last season."