July 31, 2016: LHP Ariel Miranda to Seattle Mariners for LHP Wade Miley

Grade: Incomplete, but leaning toward F

The Miley-Miranda swap is another deal that’s been discussed often here at BaltimoreBaseball.com, but the numbers are ugly every time you look at them. The 28-year-old Miranda is 12-6 with a 4.16 ERA in 32 career games with the Mariners, who are paying him $541,000 and have him under team control through 2022. The 30-year-old Miley is 6-14 with a 5.85 ERA in 32 career starts for the Orioles, who are paying him nearly $9 million, and he’ll be a free agent if the club declines his $12 million option for 2018.

Like the Arrieta trade, this deal made sense at the time it was made. Miranda was a fringe prospect, while Miley had a history as a league-average starter in the majors. But again, what matters most is the results. And in this case, the Orioles appear to have traded a decent lefty starter for a less effective, much more expensive, slightly older version. Unless Miley is able to salvage his season in the remaining months of 2017, this trade will end up among Duquette’s lowlights.

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