The 49ers signed O'Donnell off their practice squad to the active roster Saturday, Matt Barrows of The Athletic reports.
O'Donnell could be the 49ers' punter for the next four regular-season games due to Mitch Wishnowsky (back) being placed on injured reserve. O'Donnell last saw regular-season action in 2022 with the Packers, during which he averaged 44.5 yards per punt across 17 games.