Harlequins hooker Dave Ward has been charged by the Rugby Football Union for allegedly biting Jackson Wray in Saturday's win against Saracens.
Ward, 30, will face a disciplinary panel on Tuesday.
Quins lock James Horwill is also up on a striking charge over an incident that saw Sarries flanker George Kruis leave the field on a stretcher.
Meanwhile, Saracens prop Rhys Gill has been charged with making a dangerous tackle.
The Wales international was sent off for his second-half tackle on George Lowe.