Dublin - Wales lock Ian Gough was banned for three weeks on Thursday after being cited for a dangerous tackle during the Ospreys' Heineken Cup defeat by Saracens last week.
Gough was cited for a tackle on Saracens' South African hooker Schalk Brits.
The Ospreys second row forward was suspended at a European Rugby Cup disciplinary hearing.
Gough, who can appeal, cannot play again until January 9, which rules him out of the Ospreys' Celtic League games against the Scarlets, Cardiff Blues and Newport Gwent Dragons.