Chris Ashton has been banned for 13 weeks after being found guilty of biting Northampton prop Alex Waller.
The Saracens winger bit Waller on the arm at a ruck during their 27-12 Premiership victory at Allianz Park on Saturday.
The panel looked at two counts of biting but dismissed the second charge. Ashton, who denied both offences, can play again on 19 December.