Scarlets full-back Liam Williams has been cited for a dangerous tackle during Sunday's clash with Cardiff Blues.
Williams was shown a yellow card after the mid-air challenge on Wales team-mate Alex Cuthbert just six minutes into the Scarlets' 17-13 defeat at the Millennium Stadium.
But the Independent Citing Commissioner felt the tackle was worthy of a red card.
Williams was later sent off for a second yellow-card offence in a bad tempered affair which also saw Blues No 8 Robin Copeland red-carded.
A date for the hearing is yet to be confirmed.