Leinster (9) 19
Try: Conway Con:Nacewa Pens: Nacewa 4
Edinburgh (8) 18
Tries: Visser, Paterson Cons: Paterson Pens: Paterson 2
Heinke van der Merwe gets to grips with Esteban Lozada during the first half
Leinster secured a narrow win over a tough Edinburgh side at the RDS.
Three penalties by Isa Nacewa helped Leinster to a 9-8 half-time lead, with Tim Visser scoring Edinburgh's try, and Chris Paterson adding a penalty.
Andrew Conway scored an early second-half try, with Nacewa converting to make it 16-8 to the Irish province.
Paterson and Nacewa exchanged penalties and then Paterson took advantage of poor Leinster defending to score a try, which he converted himself.
Nacewa nudged Leinster ahead with a fourth-minute early penalty but Visser did well to keep the ball in play with his foot before scoring the only try of the first half in the corner after eight minutes.
Leinster lost possession at a midfield ruck and, noticing a mismatch on the left wing, scrum-half Blair dinked a kick over the top for Visser to chase.
Visser got to it ahead of the covering Richard Strauss, tapped it on and scored in the corner, Paterson missing the conversion.
Another Nacewa penalty, awarded after Roddy Grant came in at the side of a ruck, made it 6-5 to the Irish province, Paterson replying with his first penalty of the game following an infringement at a scrum by Mike Ross.
Nacewa enjoyed success with another attempt at the posts but missed with a long-range penalty before half-time.
After the break, Conway shrugged off a couple of attempted tackles to cross the line.
A quick lineout and series of rucks followed before ex-Edinburgh lock Nathan Hines popped the ball to the onrushing Conway who beat Alex Blair's tackle to cruise over to the left of the posts, Nacewa converting to make it 16-8.
Paterson and Nacewa traded penalties before Edinburgh were reduced to 14 men when replacement Dave Young was yellow-carded for hands in the ruck.
Replays showed that hooker Ross Ford was the culprit in what was seemingly a case of mistaken identity.
Despite being a man down, Paterson accepted a swift pass from Mike Blair from a ruck and cantered in under the posts for a try in the 57th minute.
The Edinburgh full-back converted the try but the visitors were unable to score any further points, their best chance being spoilt by a ruck offence from replacement Mark Robertson.
Leinster: I Nacewa, S Horgan, E O'Malley, F McFadden, A Conway, I Madigan, P O'Donohoe; H van der Merwe, R Strauss, M Ross, L Cullen (cpt), N Hines, D Ryan, S Jennings, S Keogh.
Replacements: R Ruddock for Keogh (68), I Boss for O'Donohoe (54), S Berne for Madigan (78).
Not used: J Harris-Wright, J McGrath, S Shawe, D Toner, D Kearney.
Edinburgh: C Paterson, J Thompson, A Grove, J Houston, T Visser, A Blair, M Blair, A Jacobsen, R Ford, G Cross, S MacLeod, E Lozada, N Talei, R Grant (cpt), R Rennie.
Replacements: K Traynor for Jacobsen (61), D Young for G Cross (50), C Hamilton for Lozada (69), S Newlands for Talei (68), G Laidlaw for M Blair (60), D Bishop for Houston (68), M Robertson for A Blair (60).
Not used: A Kelly