Athletics' Marco Estrada: Shifts to 60-day injured list

Estrada (back) was transferred to the 60-day injured list Tuesday.

The move has no effect on Estrada's timeline, as he's already been out for more than 60 days. He's expected to return to the Athletics' rotation at some point soon after the All-Star break. The transaction clears a spot for Oakland to activate Chris Herrmann (knee) from the injured list.