Dorwart (upper body) took the ice Tuesday in a non-contact sweater, Jordan Hall of NBC Sports Philadelphia reports.
Dorwart made his NHL debut last season, logging five regular-season appearances for the Flyers in which he notched four shots, nine hits and two blocks. While the 23-year-old center could see some minutes in the NHL again this year, he will likely spend the bulk of his time with AHL Lehigh Valley.