Maggi cleared waivers and was outrighted to Double-A Altoona by the Pirates on Friday.
The Pirates returned Maggi to Double-A Altoona following Saturday's doubleheader against the Nationals.
Maggi was optioned Saturday to Triple-A Indianapolis but will remain with the Pirates as the 27th man for their doubleheader against the Nationals.
Maggi will start at third base and bat eighth for the Pirates on Thursday afternoon against the Dodgers, Justice delos Santos of MLB.com reports.
The Pirates selected the contract of Maggi from Double-A Altoona on Sunday.
The Pirates reassigned Maggi to minor-league camp Monday.
Maggi signed a minor-league contract with the Phillies on Friday.
Maggi was outrighted to Triple-A St. Paul on Friday, Aaron Gleeman of The Athletic reports.
Maggi was optioned to Triple-A St. Paul on Tuesday, Brandon Warne of Access Twins reports.
Maggi's contract was selected by the Twins on Saturday, Brandon Warne of Access Twins reports.