London Irish scrum-half Tomas O'Leary and Worcester flanker Jonathan Thomas face RFU disciplinary hearings after receiving red cards in the Aviva Premiership over the weekend.
O'Leary was sent off for an alleged stamp on the head of Wasps flanker James Haskell in London Irish's 23-20 victory at Adams Park on Saturday.
The Ireland half-back's case will be heard on Tuesday night at the offices of Slater and Gordon Solicitors, Chancery Lane, London, by a panel of chairman Jeremy Summers, Dr Julian Morris and William Harbage QC.
Worcester loose-forward Thomas will stand before an RFU panel on Wednesday night at the Coventry Holiday Inn.
The Wales back-rower was dismissed in Worcester's 30-14 loss at Northampton for allegedly striking Saints number eight Sam Dickinson.
Daniel White will chair the panel, also comprising Alex Nock and Peter Howard.