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Oakland A’s activate Blake Treinen, DFA Aaron Brooks

The Oakland A’s activated closer Blake Treinen from the injured list, the team announced Wednesday. To make room, right-handed pitcher Aaron Brooks was designated for assignment.

Treinen was placed on the 10-day IL on June 23 with a right rotator cuff strain. He missed just 11 days (eight games). The 31-year-old made one rehab appearance with Triple-A Las Vegas, allowing three earned runs on four hits in one inning of relief on Monday night.

The right-hander was one of baseball’s best relievers in 2018, and in October he was awarded Baseball Digest’s Relief Pitcher of the Year Award, but 2019 has not been so kind to him.