Seattle has been busy with trades already this offseason and they continued that trend on Monday by acquiring left-handed pitcher Wade Miley and relief pitcher Jonathan Aro for starting pitcher Roenis Elias and Carson Smith. Miley is nothing more than a 4th starter, but he will certainly provide some solid depth to the Mariners rotation after they lost Hisashi Iwakuma in free agency. Miley will fill in at the back of the starting rotation for Seattle and he has some potential to work out even better than Seattle hoped. Also, Jonathan Aro has some potential even though he has yet to make an impact at the MLB level. Aro had a 6.97 ERA in 6 appearances for Boston, so he might need some more time in the minor leagues, yet he does have a little bit of upside a year or two down the road. Meanwhile, Carson Smith provides a young option for the Red Sox bullpen. He had a 2.31 ERA and 13 saves for Seattle last season, so he has already proven that he can be a reliable setup man which is what he will be in Boston. The Red Sox also added a nice addition to their pitching staff by acquiring Roenis Elias. He is a decent option as a 5th starter in the rotation, but since the Red Sox have so much depth then they will probably just end up adding him to the bullpen as a middle or long relief option.
Mariners Grade: C – Miley and Aro have some good upside, but neither of them really stands out. Also, giving up a young relief pitcher like Carson Smith will hurt the Mariners bullpen.
Red Sox Grade: A- – It was probably hard for Boston to give up Miley, but he wasn’t very consistent for them anyway. Also, they are getting two young pitchers that they can use in their bullpen especially Carson Smith who they can use for many years to come as a setup man.