Gregerson's tenure with the organization officially comes to an end after the Cardinals couldn't find another club willing to take on the money remaining on his contract. After inking a two-year, $12 million deal with the Cardinals in the winter of 2017, Gregerson logged just 18.1 innings at the big-league level and surrendered 15 runs on 25 hits and seven walks.

Gregerson posted a 7.94 ERA and 2.12 WHIP with two punchouts over 5.2 innings since returning from the injured list at the beginning of May. He'll hit the waiver wire before likely heading to Triple-A Memphis.

After a shoulder injury delayed the start to his season until May 5, Gregerson stumbled over his first pair of appearances. The veteran right-hander allowed three earned runs over two innings during that span, but he's now bounced back with back-to-back scoreless appearances. Gregerson has been utilized in low-leverage situations thus far, with manager Mike Shildt looking to ease the veteran back into action. However, the 34-year-old should eventually see some hold opportunities as the season unfolds considering his established track record.

The veteran reliever had mostly cruised through an extensive minor-league rehab assignment during April, but he got a rocky welcome to major-league action Sunday. Gregerson threw 12 pitches overall, allowing a leadoff double to Albert Almora, Jr. in the seventh and a run-scoring single to Ben Zobrist that plated the latter. Gregerson will likely work as a low-leverage middle-relief option as he gets his feet wet, although it bears noting he does have past closing experience with the Astros that could come into play should Andrew Miller and/or Jordan Hicks sustain injuries that shelve them for any amount of time.