Unbeaten in their two games to date, Ulster head for Thomond Park and what should be a fascinating clash with Munster, and they will be led by Ian Humphreys

Munster (v Ulster, Thomond Park, Saturday 21st, 2.30pm). P O'Brien, A Cowley, B Murphy, K Matthews, R Lane; B Keeshan, F O'Loughlin, V Soden, D Fogarty, E McGovern, R Hartigan, P McCarthy; S Keogh (Capt), E Nihill, B O'Connor. Replacements: C Garvey, F Gately, J Danagher, R O'Connor, G Noonan, K O'Mahony, F Cogan.

Ulster: Tommy Bowe (QUB); Luke Brewin (Leicester), Michael Rainey (Glasgow), Gareth Martin (Banbridge), Nnamdi Ozo (Belfast Harlequins); Ian Humphreys capt (Ballymena), Paul Roxborough (Coleraine); Niall Conlon (Instonians), Rory Best (Belfast Harlequins), Michael Stokes (QUB); Niall Greenan (Belfast Harlequins), Neil McComb (Belfast Harlequins); Wayne McAfee (Ballymena), Paul Minnis (Belfast Harlequins), Michael McComish (Ballymena). Replacements: Jamie Kilbane (Belfast Harlequins), Philip Currie (Portadown), Lewis Stevenson (Belfast Harlequins), Reuban Lucas (QUB), Stephen Auld (Belfast Harlequins), Neil Patterson (Coleraine), Richard McCarter (QUB).

Leinster (v Connacht, Sportsground, Saturday, 21st, 2pm). Ronan Carroll (Lansdowne); Killian Coleman (Terenure College), Ken Kennedy (UCD), John Quigley (capt) (Dublin University), Gareth Hayes (UCD); Andrew Tallon (Lansdowne), Daragh Geraghty (UCD); John Lyne (Lansdowne), Brian Blaney (Terenure College), Marc Whelan (Dublin University); Simon Crawford (UCD), Marc Warberton (Dublin University); Jonathon Barretto (Terenure College ), Niall Ronan (Lansdowne), Conor Davis (UCD). Replacements: Jason Moran (UCD), Kevin Corrigan (UCD), Kevin Croke (UCD), Stephen Rockett (Old Belvedere), Philip Jones (Co Carlow), David McAllister (Terenure College), Paddy Berkery (Lansdowne).