Riley O'Brien

Cardinals president of baseball operations Chaim Bloom told reporters the deal is now official. The hard-throwing 34-year-old middle reliever fortifies St. Louis' bullpen after recording an underwhelming 5.30 ERA -- 4.40 FIP -- 1.57 WHIP and 58/32 K/BB ratio across 56 innings for the Mets last year. He's been a durable innings-eater, making 55 appearances or more in each of the past five seasons, and has some experience in high-leverage spots. He isn't a threat to close with the Cardinals but it wouldn't be shocking if he wound up vulturing the occasional save from Riley O'Brien or JoJo Romero.