Rodriguez (shoulder) will throw a bullpen session Friday, Alex Weiner of ArizonaSports.com reports.
Rodriguez threw off a mound for the first time this season Tuesday and recovered well. He could be cleared to face live hitters after another couple bullpen sessions, which could be the final hurdle before beginning a rehab assignment. Rodriguez has been on the shelf all season due to the shoulder strain and will likely require multiple starts in the minors before being cleared to make his debut for the Diamondbacks.