When the Mets acquired Edwin Díaz in a trade between the 2018 and 2019 seasons, they had gotten control of one of the very best relievers in the game over the preceding three years. Whether or not you agreed with the trade at the time, it was hard to argue that Díaz wasn’t very good.
Having made his major league debut in 2016, Díaz racked up 191.0 innings over the course of three years with the Mariners with a 2.64 ERA and 2.56 FIP, the latter of which combined with his workload to give him 6.