The Phillies sent Trivino (back) to Triple-A Lehigh Valley on Tuesday to begin a rehab assignment.
Trivino's first scheduled rehab outing was rained out Tuesday, but he's ready to appear in games after missing the last three-plus weeks with a right thoracic muscle spasm. The veteran reliever has made five appearances in the majors this season between the Orioles and Phillies, yielding 10 runs with a 7:7 K:BB across six frames.