It was Cook's best season yet, thanks to a fantastic late-breaking sinker and good defense behind him in Colorado. The potential for another 13-16 wins makes him a decent back-end fantasy starter, though owners will have to look elsewhere for strikeout help.

The Denver Post's Patrick Saunders and Troy E. Renck report Colorado Rockies general manager Dan O'Dowd said he wants manager Clint Hurdle to be tougher on his players. SS Troy Tulowitzki and SP Aaron Cook said they would be open to Hurdle changing his approach given the team's struggles.