Carroll, 29, spent 2021 in the Orioles and Marlins organizations -- the latter after he was released by Baltimore in August. He's appeared in 18 MLB games with unsightly ERA of 13.74 over 19 innings. He provides depth in the minors for San Francisco in 2022. 

Carroll struggled with a 5.57 ERA and 23/11 K/BB ratio over 21 relief innings this season in Triple-A. The 28-year-old came over from the Yankees in the Zach Britton trade in 2018, but he put up a brutal 13.74 ERA over 18 relief appearances in the majors between 2018 and 2020. And now Baltimore is ready to move forward. 

The move clears him from the 40-man roster, but he'll remain with the Orioles at their alternate site. Carroll has allowed 12 runs in two innings during his time in the majors this season.

This move opens a 30-man roster spot for John Means, who is making his regular season debut on Thursday night against the Yankees. Carroll had allowed six earned runs while recording only one out.