Rob Kearney makes an attempt at the drop goal as Leinster have advantage but it sails wide of the uprights

Huge intensity in the early exchanges as Leinster carry well, but the Quins defence looking strong

Leinster win the scrum cleanly and are making good yards into the hosts' 22m

Leinster are awarded the first scrum of the afternoon as Mattews spills the kick off

Gopperth gets us underway!

Both sides have made it onto the field here at the Stoop as we await kick off

Hello and welcome to Ultimate Rugby’s coverage of this afternoons European Champions Cup action as Leinster travel to the Twickenham Stoop to take on Harlequins in the third round of the tournament and the first of these back-to-back fixtures. Both sides welcome back their international contingent for what is a re-match of the 2009 quarterfinal, Leinster victorious that day en-route to their first Heineken Cup title. Conor O’Shea will be able to call on the likes of Chris Robshaw, who makes his 200th appearance for the club today, captain Joe Marler and in the backline Mike Brown at fullback with Marland Yarde on the wing while Care and Evans resume their dangerous half-back partnership. Meanwhile Leinster coach Matt O’Connor will be glad to see the return of Rob Kearney, Jamie Heaslip, Rhys Ruddock and Jack McGrath as well as other returning internationals after a successful November with Ireland. Notably Luke Fitzgerald recovers in time to take position on the left wing this afternoon while Ian Madigan continues at inside-centre in the Leinster colours. Todays fixture is of huge importance for both sides as they both are currently sitting on 8 points at the top of Pool 2 with two wins apiece. Stay with us for live updates and match analysis!

I remember that game clearly back in 09 quins tried to cheat with the blood sub and still missed the kick

Does someone knows where can I watch this from Mexico?

BT Sport / Setanta