The Twins sent Rojas (elbow) to Triple-A St. Paul this week to begin a rehab assignment, Aaron Gleeman of AaronGleeman.com reports.
Rojas has been shelved since late May with left elbow inflammation, but after completing a 30-pitch live batting practice session over the weekend, he's been cleared to start pitching in rehab games. How long Rojas' rehab assignment lasts could depend on what role the Twins have planned for him when he returns. He's made one start for Minnesota this season and has gone multiple innings in all four of his relief appearances.