Petersen was put on waivers Wednesday, according to Elliotte Friedman of Sportsnet.
Petersen turned aside 25 of 32 shots in Sunday's 7-6 loss to Pittsburgh.
Petersen will defend the road goal Sunday versus the Penguins.
Petersen will defend the home crease versus Seattle on Saturday, according to Jordan Hall of NBC Sports Philadelphia.
Petersen was summoned from AHL Lehigh Valley on Tuesday.
Petersen was reassigned to AHL Lehigh Valley on Saturday.
Petersen was elevated from AHL Lehigh Valley on Thursday.
Petersen was assigned to AHL Lehigh Valley on Wednesday, per Adam Kimelman of NHL.com.
Petersen was called up from AHL Lehigh Valley on Tuesday.
Petersen was reassigned to AHL Lehigh Valley on Monday, Dylan Robillard of Olde City Sports Network reports.