The 30-year-old Allen was signed to a one-year, $8.5 million contract in January after seven seasons with the Cleveland Indians. The Angels recalled right-hander Taylor Cole from Triple-A Salt Lake City.
Allen gave up four hits, including a two-run home run, and two walks in 2/3 of an inning against the Rays. In 25 games this season, Allen is 0-2 with a 6.26 ERA and four saves in four opportunities.
He was sidelined earlier in the season with a back strain.
Angels manager Brad Ausmus says the move "unfortunately it was one we felt we had to make for the team. He worked his tail off. He cared. He wanted to get back to where he was, but nothing was sticking."
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