Murphy refused his outright assignment to the minors and elected free agency Oct. 30, Jason Mackey of the Pittsburgh Post-Gazette reports.
Murphy cleared waivers Friday and was outrighted to the minors, Jason Mackey of the Pittsburgh Post-Gazette reports.
Murphy will start at catcher and will bat ninth Monday in the first game of the Pirates' doubleheader with the Reds.
Murphy will return to a bench role for Wednesday's game against the White Sox.
Murphy will start behind the plate and bat ninth against St. Louis on Saturday.
The Pirates added Murphy to the 40-man roster Monday.
Pittsburgh added Murphy to its 60-man player pool.
Murphy went 3-for-19 with three home runs during Grapefruit League action.
Murphy signed with the Pirates as a non-roster invitee Friday, Adam Berry of MLB.com reports.
Murphy was non-tendered by the Braves on Monday.