Warren had plenty of success as a multi-inning reliever early in his career. Between 2013-17 (all but a half-season of which came with New York), he posted a 3.34 ERA/3.76 FIP over 409.2 innings. Warren remained fairly productive in a 2018 season split between the Yankees and Mariners but had a disastrous 2019 after signing with the Padres. His San Diego tenure culminated in a September Tommy John surgery.
The right-hander signed a two-year minor-league deal (covering his post-TJS rehab in year one) with the Yankees last offseason. He was cut loose this past July, but GM Brian Cashman expressed an interest at the time in working out a new deal with Warren this winter. That has apparently come to pass. Fourteen months removed from the Tommy John procedure, Warren has fully recovered, Kuty hears. He’ll now look to work his way back into the Yankees’ bullpen mix.