The Giants released Hildenberger on Thursday.
Hildenberger was re-signed by the Giants on Monday to a minor-league contract that includes an invitation to spring training, Maria I. Guardado of MLB.com reports.
Hildenberger (undisclosed) was reinstated from Double-A Richmond's 60-day injured list Friday and was assigned to Triple-A Sacramento.
Hildenberger (undisclosed) began a rehab assignment at Single-A San Jose last week and allowed two earned runs on two hits while striking out one in a one-inning appearance Sunday.
Hildenberger (undisclosed) is listed on the 60-day injured list at Double-A Richmond.
Hildenberger re-signed Sunday with the Giants on a minor-league contract.
Hildenberger was outrighted to Triple-A Sacramento after clearing waivers Wednesday, Maria I. Guardado of MLB.com reports.
Hildenberger was designated for assignment Friday, Alex Pavlovic of NBC Sports Bay Area reports.
Hildenberger was claimed off waivers by the Giants on Tuesday and optioned to Triple-A Sacramento, Maria I. Guardado of MLB.com reports.