Douglas was arraigned Tuesday on charges of third-degree assault and second-degree strangulation.
According to court documents, Douglas "grabbed her neck" and "slammed her into the walls several times." Douglas reportedly said the injuries occurred during rough sex.
The 10-year NFL veteran played for the New York Jets, Philadelphia Eagles and Jacksonville Jaguars, and briefly worked as an analyst at ESPN.
Beautician charged with giving client fatal silicone butt injection
Ohio bar shooting arrested, charged with murder