Personally, I would never do this trade if I owned Mauer. If nothing else, I'd try to get a much better starting pitcher, probably one more proven and with more experience than Garcia.
However, if you feel confident that Mauer and Martin will be a wash, then this trade obviously is in your favor. Who's to say that my projections are more correct than yours? Still, you could probably get a better deal. Especially if this trade is already on the table, you could test something better out and then fall back on Garcia/Martin if it doesn't work out.
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