Rondon has been on the 15-day disabled list since the end of Spring Training. The Tigers have been taking a deliberate approach to his rehab since he was shut down a few weeks ago for another round of medication.
How Rondon progresses is likely to have a major impact on how the Tigers view their bullpen and any potential moves going into the summer. If healthy, Rondon would give Detroit another right-handed setup man to pair with Joba Chamberlain, who has taken the bulk of the eighth-inning work since Joe Nathan went on the DL shortly after Opening Day.
• Joe Nathan undergoes Tommy John surgery
Though the Tigers continue to be cited in reports as a potential destination for free-agent reliever Rafael Soriano, there are no indications that he's a serious consideration at this point.
That said, Rondon could end up needing a deliberate rehab assignment in the Minors to get geared up for Major League competition again.
Jason Beck is a reporter for MLB.com. Read Beck's Blog and follow him on Twitter @beckjason. This story was not subject to the approval of Major League Baseball or its clubs.