Scottish referee Peter Allan will signal the start of European club rugby's knock-out stages when he takes charge of the clash between London Irish and Bourgoin at the Madejski Stadium on Thursday, 9 April.
Peter Fitzgibbon (Ireland) and Romain Pote (France) will be on duty on Saturday, 11 April, at Worcester Warriors and Northampton Saints respectively with Italian official Carlo Damasco controlling the all-English Sunday quarter-final between Saracens and Newcastle Falcons at Vicarage Road.
EUROPEAN CHALLENGE CUP 2008/09 - (All kick-offs LOCAL times)
THURSDAY 9 APRIL
19.30 - London Irish v Bourgoin - Peter Allan (S)
SATURDAY 11 APRIL
13.00 - Worcester Warriors v Brive - Peter Fitzgibbon (I)
15.00 - Northampton Saints v Connacht Rugby - Romain Poite (F)
SUNDAY 12 APRIL
15.00 - Saracens v Newcastle Falcons - Carlo Damasco (It)
(a) Match Officials for Heineken Cup and European Challenge Cup matches are nominated by an ERC Selection Panel made up of Bob Yeman (WRU), Joel Dume (FFR) and Roy McCombe (SRU).
(b) The nominated referees are drawn from the European 2008/09 referees' panel.
(c) The nominations are submitted to the ERC Match Officials Sub Committee made up of Referee Managers from the six Unions of the participating teams, who review and confirm the final appointments.