The Orioles released Kimbrel on Tuesday, Dan Connolly of The Athletic reports.
The Orioles designated Kimbrel for assignment Wednesday.
Kimbrel (7-5) allowed two runs on two hits and struck out one over one inning, taking the loss Saturday versus the Rockies.
Kimbrel (6-2) picked up the win Sunday, allowing three runs on one hit and two walks over one inning against the Yankees. He struck out one.
Kimbrel picked up the save Sunday, allowing one hit and no walks with two strikeouts across a scoreless inning against Oakland.
Kimbrel picked up the save over the Mariners on Wednesday, pitching a perfect ninth inning while striking out two.
Kimbrel struck out one in a perfect ninth inning Wednesday to record his 16th save of the season in a 4-2 win over Atlanta.
Kimbrel worked a perfect ninth inning Friday to record his 14th save of the season in a 6-3 win over the Rays. He didn't walk or strike out a batter.
Kimbrel struck out one in a perfect inning to earn the save in Sunday's 4-1 win over the White Sox.
Kimbrel picked up the save on Thursday, pitching a perfect two-thirds of an inning in an 8-6 victory over the White Sox.