The Orioles released their former closer from his contract on Wednesday.
According to ESPN's Jeff Passan, Baltimore has designated Craig Kimbrel for assignment with just two weeks remaining in the regular season.
Kimbrel has a 5.33 ERA and six saves this season, his 15th in the major leagues.
The right-hander, known for his powerful pitching, has struggled greatly since the All-Star break, posting an astounding 10.59 ERA in 18 games in the second half of the season.
On Tuesday night, Kimbrel had the worst performance of his career against the Giants, allowing a career-high six runs.
The nine-time All-Star pitcher began the season as the Orioles' closer, replacing Felix Batista, who underwent elbow surgery in February.
Kimbrel briefly lost his closer role in May but was mostly solid in the first half of the season, posting a 2.80 ERA and saving 23 games for Baltimore.
But by early August, the team replaced Kimbrel with Serantony Dominguez as the closer, and he has only appeared in 13 games since then.
He signed a one-year, $12 million contract with the Orioles last offseason, which included a club option for 2025.
The Orioles, who are four games behind the Yankees in the American League East, will likely be looking to other options in their relief pitching staff to improve their 4.17 ERA, which is 10th-worst in the major leagues.
The 36-year-old Kimbrel is one of the best closers of all time, having saved 440 games in his career, fifth-most in MLB history.
He has received Cy Young Award voting in five seasons and won the National League Rookie of the Year Award in 2011 with the Braves.
