Blue Jays Prospect Trey Yesavage to Throw Off Mound for First Time Since Knee Surgery

Trey Yesavage is set to throw off a mound for the first time since undergoing knee surgery, a milestone step in what the Blue Jays are framing as a late-season comeback plan, per Keegan Matheson of MLB.com.

The session represents an early-stage marker rather than a return date — what happens after a first mound throw and how quickly the organization moves Yesavage through subsequent steps remains unconfirmed.

What to watch

How Yesavage responds to Friday's session will shape whatever comes next. No timetable, assignment level, or activation target appears in the reporting.

The broader context: Toronto has been actively managing its pitching depth this September, with Jameson Taillon working through a rehab start and Ricky Tiedemann recalled as part of September roster moves. Yesavage's mound session adds another thread to a rotation picture that is still being assembled, though his path back to game action is the least defined of the group.

For now, a prospect throwing off a mound after knee surgery is exactly what it sounds like — progress, carefully measured, with the fine print still to come.