It's a mostly harmless acquisition and Miner has been productive in his limited major league career. Assuming he does indeed get a shot at being starter number five let's see how he stacks up with the rest of the rotation.
Provided by Baseball-Reference.com
Well look who leads in the rotation in ERA+ and WAR? It's a little deceiving of course, Miner does have a rather pronounced split - 4.85 ERA as a starter compared to 3.60 as a reliever. He appears to be ideally suited to a long relief/spot starter role, if he's healthy enough to actually make the roster. It's a low risk move and if he should find himself in the rotation I'm willing to bet he puts up better numbers than Davies and SOS.
This move does leave me with one question though, why are they willing to give Miner a shot at the rotation and not Robinson Tejeda?