Matusz (back) will not rejoin the club Thursday as originally expected, Roch Kubatko of MASN Sports reports.

EDGE Analysis

It's unclear what prompted the change of plans, but Matusz is now scheduled to pitch multiple innings Friday with High-A Frederick. Assuming all goes well in that outing, the lefty could still be in line to rejoin the big league club at some point next week, though he's struggled in his three rehab appearances, so they may use this time to get him back on track first.