Cubs acquired RHP Chris Volstad from the Marlins for RHP Carlos Zambrano and cash considerations. The Cubs had to cover most of Zambrano's salary, but they did get something of value in return. While Volstad has a 4.73 ERA over the past two seasons, a number of advanced metrics suggest that he has pitched better than his results indicate. The 25-year-old right-hander is arbitration-eligible for the first time this winter and is under team control through 2014. He figures to join a rotation which will include some combination of Matt Garza, Ryan Dempster, Randy Wells, Travis Wood and Andrew Cashner.