Peterman completed 12 of 19 pass attempts for 108 yards and a touchdown in Friday's preseason finale against the 49ers.
Peterman was signed to the Raiders earlier this preseason after getting cut loose by the Saints on Aug. 2. The veteran journeyman rejoins Las Vegas for the second time in his pro career in an attempt to back up journeyman starter Gardner Minshew this upcoming season. Peterman would still have to beat out the current frontrunner for the No. 2 position, Aidan O'Connell, who was one of the healthy scratches in Friday's exhibition.