Ríos, 30, has 98 1/3 innings of major league experience, but scattered over six seasons. He’s pitched for the Phillies, Pirates, Mariners, Red Sox and Athletics, never topping 36 frames in any individual season. He has a combined 6.32 earned run average in his career, having struck out 20.8% of opponents while giving out walks at a 12.5% clip.
He started the year with the Braves on a minor league deal and looked in good form for a while. He tossed 25 1/3 innings for their Triple-A club with a 2.49 ERA, 30.3% strikeout rate and 8.1% walk rate. He was traded to the A’s in June in a cash deal and was quickly added to the major league roster, but he landed on the injured list after just three appearances. In July, he required surgery to repair an axillary branch aneurysm in his right shoulder. He was outrighted off the roster in October and elected free agency.
The major league track record isn’t especially impressive, but he’s been better in the minors. That includes a 4.12 ERA at Triple-A in 168 1/3 innings over six separate seasons. He has struck out a quarter of batters faced at that level, though he’s also given out free passes at a 12% clip. For the Mets, there’s no harm in bringing him aboard via this minor league deal to provide some non-roster depth. If selected to the roster, he is out of options but has just over three years of service time.