In 25 relief appearances for Triple-A Pawtucket this season, Hill posted a 3.23 earned run average and opponents hit just .206 against him. He struck out 45 batters and did not allow a home run in 39 innings. He had a July 1 opt-out date in his contract.
The plan called for the 34-year-old Hill to be a left-handed specialist out of the bullpen, Angels manager Mike Scioscia said. In 46 at-bats this season, lefties batted .196 without an extra-base hit against him.
The Angels optioned Michael Kohn to Triple-A Salt Lake City to create a roster spot.