Waldichuk (elbow) threw between 20 and 25 pitches in a bullpen session Friday, the Associated Press reports.
It's the second bullpen session for Waldichuk this week, as the left-hander continues a deliberate throwing program. Waldichuk could be deemed ready to face live hitters after Friday's session, although how he recovers over the weekend from the activity will likely be the determining factor in whether he progresses to the next step.