The Chargers signed O-linemen Colin Baxter and Stephen Schilling and placed WR Seyi Ajirotutu and C David Molk on injured reserve.
Jets C Nick Mangold participated in practice Wednesday.
Undrafted rookie C Colin Baxter will fill in for Nick Mangold. He may be undersized, but the team is confident in his role as a stopgap.
Jets Pro Bowl C Nick Mangold underwent an MRI on Monday, which confirmed he has a high ankle sprain.
The Jets claimed four players off waivers Sunday, including backup QB Kevin O'Connell, and waived 2009 draft bust Aaron Maybin.