Schrock was reassigned to minor-league camp Saturday.
Schrock (kneecap) agreed Monday with the Padres on a minor-league contract that includes an invitation to major-league spring training, Jon Morosi of MLB Network reports.
The Reds released Schrock (kneecap) on Tuesday.
Schrock (kneecap) was designated for assignment by the Reds on Monday.
Schrock will miss 3-to-4 weeks with a small fracture in his right knee cap, Charlie Goldsmith of The Cincinnati Enquirer reports.
The Reds optioned Schrock to Triple-A Louisville on Sunday, Bobby Nightengale of The Cincinnati Enquirer reports.
The Reds recalled Schrock from Triple-A Louisville on Thursday.
The Reds optioned Schrock to Triple-A Louisville on Tuesday.
Schrock (calf) was reinstated from the 60-day injured list Friday.