The Cubs have officially agreed to trade enigmatic starting pitcher Carlos Zambrano to the Miami Marlins for starter Chris Volstad. Chicago will pay approximately $15 million of the $18 million owed to Zambrano for the 2012 season. The Cubs come out smelling like a rose with this deal. Zambrano was an overpriced, unreliable hot head. The trade is addition by subtraction. In Volstad the Cubs acquired an inexpensive, young (25 years old) pitcher who is under team control for another three years. The money owed to Big Z was a sunk cost so the trade boils down to this: one year of an unreliable, mediocre pitcher for three years of a younger mediocre pitcher. Cubs win, and so do the Gatorade coolers and bathroom stalls in Wrigley Field.