A clinical first forty minutes from Heineken Cup Champions Leinster saw the Irish Province cruise to a 38-13 victory over Glasgow Warriors at the RDS.

The hosts were irresistible in the first period, running in four tries and wrapping up the bonus-point before the break. Glasgow, on the back of their opening victory against Bath last weekend came out fighting in the second half but it wasn't quite enough.

Rookie centre Eion O'Malley, playing only his fourth game of Heineken Cup rugby, stepped up to the mark in the midfield scoring two first half tries.

Duncan Weir kicked the visitors ahead with a 1st minute penalty but Leinster soon struck with Ireland full-back Rob Kearney diving over in the corner after good work from Isa Nacewa.

Weir kicked his second penalty but the response was the same from Leinster with O'Malley touching down on this occasion and again the conversion was spot on from Johnny Sexton.

O'Mally then scored his second after lovely hands in the backline and the fourth was scored just before the break with Gordon D'Arcy touching down to record the bonus point.

The Scots stemmed the tide in the second half and managed a try by replacement scrum half Henry Pyrgot and the hosts replied with a try by Issac Boss but the job had been done before half-time.

Meanwhile, It didn't take long for New Zealand's World Cup hero Stephen Donald to make himself feel at home at The Recreation Ground where he guided his new team Bath to a 16-13 win on his home debut.

The man whose penalty kick earned the All Blacks the world title against France earlier in the season found himself facing up to the his opponent from that great day at Auckland's Eden Park, Francois Trinh-Duc, and once again he got the better of him.

Having seen his new teammates lose a grip of their opening Pool 3 game in the dying moments in Glasgow last week, Donald ensured they got off to a flying start this time. He kicked a penalty after four minutes and then threw a long, cut out pass to Olly Woodburn to allow the wing to run in at the right corner.

And the former Waikato Chiefs star wasn't finished yet. He intercepted a Trinh-Duc pass in his own 22, raced to within five metres of the line and then got up from the ruck in time to see prop David Flatman crossing for a second home try.

If it was bad enough to see the scoreboard showing them 13 points adrift in 18 minutes, Montpellier, who saw Jonny Sexton land a last gasp penalty to snatch a draw for Leinster in their opening Heineken Cup match the previous weekend, lost Trinh-Duc for 10 minutes after the try.

Irish referee Alain Rolland ruled he had tried to slow down the ruck ball after the Donald interception and he got a yellow card for his efforts.

That shocked last season's French Championship finalists into sterner action and they only conceded one more score after that. Their revival was begun by a Martin Bustos Moyano penalty from half-way, that made it 13-3 at the break, and then he crossed for a try that he also converted.

The crowd howled their disapproval of that score after TV replays in the ground showed Thibault Privat's final pass was forward. But that try made it 16-10, Donald having added a penalty three minutes into the second half, and another Bustos Moyano kick on 53 minutes set up a pulsating final quarter.

Montpellier pressed hard, and their strong pack made a major impact at scrum time, but they couldn't find a way to bridge the gap and ended just short. A losing bonus point was their only consolation.

In Sunday's matches:

Leinster 38 Glasgow 13

Scorers:

For Leinster:

Tries: Kearney, O'Malley 2, D'Arcy, Boss
Cons: Sexton 4, Madigan
Pen: Sexton

For Glasgow:
Try: Pyrgos
Con: Weir
Pens: Weir 2

Teams:

Leinster: 15 Rob Kearney, 14 Isa Nacewa, 13 Eoin O'Malley, 12 Gordon D'Arcy, 11 Luke Fitzgerald, 10 Johnny Sexton, 9 Eoin Reddan, 8 Jamie Heaslip, 7 Sean O'Brien, 6 Kevin McLaughlin, 5 Devin Toner, 4 Leo Cullen, 3 Mike Ross, 2 Sean Cronin, 1 Heinke Van Der Merwe.
Replacements: 16 Richardt Strauss, 17 Cian Healy, 18 Nathan White, 19 Rhys Ruddock, 20 Shane Jennings, 21 Isaac Boss, 22 Ian Madigan, 23 Fionn Carr.

Glasgow: 15 Stuart Hogg, 14 Tommy Seymour, 13 Pete Murchie, 12 Graeme Morrison, 11 Colin Shaw, 10 Duncan Weir, 9 Chris Cusiter, 8 Ryan Wilson, 7 John Barclay, 6 Rob Harley, 5 Alastair Kellock, 4 Richie Gray, 3 Michael Cusack, 2 Pat MacArthur, 1 Ryan Grant.
Replacements: 16 Finlay Gillies, 17 John Welsh, 18 Ed Kalman, 19 Tom Ryder, 20 Henry Pyrgos, 21 Chris Fusaro, 22 Troy Nathan, 23 Federico Aramburu.

Referee: Andrew Small (England)

Bath 16 Montpellier 13

For Bath:
Try: Woodburn, Flatman
Pen: Donald 2

For Montpellier:
Try: Moyano
Con: Moyano
Pen: Moyano 2

Yellow card: Francois Trinh-Duc

Teams:

Bath: 15 Nick Abendanon, 14 Olly Woodburn, 13 Dan Hipkiss, 12 Sam Vesty, 11 Tom Biggs, 10 Stephen Donald, 9 Michael Claassens, 8 Simon Taylor, 7 Lewis Moody, 6 Francois Louw, 5 Ryan Caldwell, 4 Stuart Hooper, 3 David Wilson, 2 Ross Batty, 1 David Flatman.
Replacements: 16 Mark Lilley, 17 Charlie Beech, 18 Anthony Perenise, 19 Dave Attwood, 20 Guy Mercer, 21 Mark McMillan, 22 Olly Barkley, 23 Jack Cuthbert.

Montpellier: 15 Lucas Amorosino, 14 Martin Bustos Moyano, 13 Geoffrey Doumayrou, 12 Paul Bosch, 11 J-B Peyras Loustalet, 10 Francois Trinh-Duc, 9 Julien Tomas, 8 Mamuka Gorgodze, 7 Fulgence Ouedraogo, 6 Rémy Martin, 5 Thibaut Privat, 4 Joe Tuineau, 3 Maximiliano Bustos, 2 Agustin Creevy, 1 Mikheil Nariashvili.
Replacements: 16 Rassie van vuuren, 17 Na'ama Leleimalefaga, 18 George Jgenti, 19 Drickus Hancke, 20 Masi Matadigo, 21 Benoit Paillaugue, 22 Santiago Fernandez, 23 Yoan Audrin.

Referee: Alain Rolland (Ireland)