Italy prop Martin Castrogiovanni is in danger of missing Italy's Six Nations clash with Ireland on Saturday week after being cited for allegedly stamping on Scotland's Duncan Taylor during Saturday's game in Rome.
A statement from Six Nations organisers confirmed the 34-year-old will attend a disciplinary hearing in London tomorrow to answer to a charge of breaching Law 10.4(b) - "a player must not stamp or trample on an opponent" - during Scotland's 36-20 victory at the Stadio Olimpico.
Castrogiovanni, who has made 118 Test appearances, appeared as a second-half replacement and later appeared to direct a stamp towards Taylor's foot.
Elsewhere, Craig Gilroy has said Ulster must show what it means to represent the province when they take on Zebre at home on Friday.
Les Kiss' side set lofty targets for the five-game block during the Six Nations but, having ground out results when not at their best in the early part of last month, have veered off course in recent weeks with back-to-back, unexpected defeats.
A loss to Scarlets at home was followed up by Sunday's well below par defeat to Cardiff at the Arms Park and the side have slipped from top to fourth in the table.
"It's a must-win for us," the winger said. "Personally I'm really up for it and I know the other guys will be. If we want to get into the play-offs, get a home semi-final, we really need a big finish to this season.
"All we can do is get up for that and try and to right a few wrongs. It starts on Friday night and we need to show what it means to us."