Which starter would you replace? Again, we have 5 starters with ERAs under 4.00, and 4 of which 30 years of age or younger. We think Marquis is the most likely to regress over time, but he has the 2nd largest contract of the 5 (currently) and certainly has pitched well enough to retain his spot in the rotation. Marshall is currently going through his "He can't really be this good, can he?" evaluation phase with the fans and organization, but has done nothing to lose his spot either. The other 3 shouldn't lose their starting spots regardless. Also, Marmol is cheap. The Cubs have overspent at too many positions, one of them being middle relief. Trading Marmol for Garland just makes our bullpen less valuable (by having to replace Marmol with a likely veteran earning more money) and our starting rotation more expensive. And of course, our rotation is already the greatest strength of this team. Why weaken one to improve the other. This team needs to shore up its lineup, not increase costs in an area of relative strength while dealing away one of our more intriguing assets.