Cubs' manager Dale Sveum has made the expectations for Starlin Castro perfectly clear:

It's your time to shine – take control of your own destiny.

While Sveum himself cannot be directly quoted, Carrie Muskat (Chicago Cubs beat writer) has reported that this is the message being sent in the Cubs' clubhouse.

Castro has been put on the spot considering he's entering his fourth year of big league baseball, which is almost necessary at this point. His play has been brought in to question in the past even being caught looking away from the play while pitches were being delivered. Not exactly big league caliber habits, but Castro showed improvements last season. His all-star appearance in 2012 reinforces his potential new found successes.

Since Sveum wants Castro to make some changes next season, let's take a quick gander at his metrics. Castro posted a .283/.323/.430 triple slash line in 646 AB. This is a very respectable stat line considering how many at bats Castro posted in 162 starts. Yes, Castro started every single game last season. I mean… wow… the kid has some serious aversion to injuries and stagnation.