Your infield in general is terrible and your pitching looked great then just dropped off. You have no middle tier starters really now that Escobar and Eaton are gone. Once they are back, your pitching should be just fine. You should be fine with saves, especially if Mesa is traded.
You are going to die a slow death starting guys like Mackowiak, Eckstein, kennedy, and Taveras in the second half. Your lineup needs some serious revamping. I really have no idea how youd go about getting more power unless you traded a guy like H. Street and Cameron for a middle/upper tier OFer. Cameron wont last and you dont need that many closers. You need another big bat, preferably an infielder.
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