Michael Cheika has named most of his Leinster side to take on Munster in the Celtic League at Thomond Park tomorrow, but some doubts remain over key positions as the Australian surveys his options.

Cheika has left a number of places double booked as he assesses fitness ahead of the game and will confirm starters closer to the three o'clock kick-off.

A definite starter is Bernard Jackman who retains his place at hooker after playing half an hour in last week's win over Agen, while Guy Easterby begins at scrumhalf.

Outside him, Cheika will decide between the Felipe Contepomi and Jonathan Sexton.  Cheika has also to make up his mind on the two wings where Luke Fitzgerald and Shane Horgan are vying for the right side and Denis Hickie and Rob Kearney are in contention for the blindside.

The coach is also in two minds about the secondrows and number eight where he has a wealth of options that include Stephen Keogh and Jamie Heaslip at the back of the scrum.

Brian O'Driscoll will captain the side from outside centre.

Leinster:15: Girvan Dempsey, 14: Shane Horgan / Luke Fitzgerald, 13: Brian O'Driscoll CAPTAIN, 12: Gordon D'Arcy, 11: Denis Hickie / Rob Kearney, 10: Jonathan Sexton / Felipe Contepomi, 9: Guy Easterby

1: Ronan McCormack, 2: Bernard Jackman, 3: Stanley Wright, 4: Trevor Hogan, 5: Malcolm O'Kelly / Owen Finegan, 6: Cameron Jowitt / Stephen Keogh, 7: Keith Gleeson, 8: Stephen Keogh / Jamie Heaslip

Replacements: 16: Reggie Corrigan / Fosi Pala'amo, 17: Harry Vermaas, 18: Malcolm O'Kelly / Owen Finegan, 19: Jamie Heaslip / Cameron Jowitt, 20: Chris Whitaker, 21: Jonathan Sexton / Felipe Contepomi / Andrew Dunne, 22: Luke Fitzgerald / Kieran Lewis

Referee:Alan Lewis (IRFU)