Micheal Cheika has named his starting line up to face Harlequins in Sunday's Heineken Cup Quarter Final in The Twickenham Stoop. Brian O'Driscoll and Luke Fitzgerald return to the starting line-up for the first time since the Six Nations. O'Driscoll partners Gordon D'Arcy at centre, while in the pack, Bernard Jackman has been named at hooker. Shane Jennings and Jamie Heaslip join Rocky Elsom in the back-row.