Not sure how many teams are in your league, but Julio has more value than Mike Gonzalez. I think your team looks ok, you might see Adrian have more value than Konerko soon. If your league has a 1250 max IP you might look to drop Contreras for a solid RP (Rincon, Linebrink, Shields, Neshek, Broxton, Zumaya, etc). You could also take a look at Billingsley, since he'll be in the pen to start off with. He has a ton of upside and could pull a Liriano (minus the arm troubles).
If you could:
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