Bernardo Stortoni went over for Glasgow's first try

Three Glasgow tries came courtesy of Bernardo Stortoni and Rob Dewey (2), while Dan Parks kicked three conversions and three penalties on what could be his final appearance at Firhill.

Glasgow were looking to complete a clean sweep of the Irish sides at Firhill this season, while Leinster were seeking their first win in Glasgow since May 2006.

With a top-four finish already guaranteed and a Heineken Cup semi-final in eight days' time to prepare for, Leinster fielded a largely second-string XV, and inexperience cost the visitors with Rhys Ruddock, Trevor Hoggan, Dom Ryan and Mike Ross all spending time in the sin-bin.

The contest did not look like a mis-match in the early stages, however, with Glasgow out of sorts and making some poor decisions, with experienced scrum half Chris Cusiter a notable sinner.

Leinster were unable to take advantage, however, missing two penalties inside 12 minutes through full-back Ian Madigan.

Glasgow broke the deadlock after 23 minutes when Stortoni crossed the line for a try which was converted by Parks to bring his career points total for Glasgow to 1500.

The young Leinster team were not about to go down without a fight, though, and two penalties inside two minutes from Madigan cut the lead to 7-6.

Glasgow finished the half strongly, though, with two penalties from Parks - the second of those from a foul which saw Ryan sin-binned - extending their lead to 13-6 at the interval.

Four minutes after the re-start Leinster found themselves down to 13 when Hogan was sin-binned for a high tackle on Cusiter. Parks missed the subsequent kick but atoned when he struck his third penalty of the contest through the posts six minutes later.

When Cusiter's darting run was crudely ended by Ruddock on 54 minutes Leinster saw another player spend time in the sin-bin, while the referee also handed out a fourth yellow card to Ross after 71 minutes.

With Leinster short-handed for much of the second period, Glasgow set up camp inside their opponents' 22, but the hosts could only profit to the tune of two tries by Dewey.

The first of those arrived on 63 minutes when Dewey dashed over following a line out, while the substitute wrapped up a victory that takes Glasgow second in the standings with another effort at the death after latching onto a kick from Parks.

Five of the victorious Warriors will be leaviing the club at the end of the season - Kelly Brown, Dan Turner, Tim Barker, Mark McMillan and Dan Parks - and they received a well-deserved standing ovation from the Glasgow support.

Speaking after the game, Glasgow Warriors coach Sean Lineen said: "To get the win was fantastic. Leinster don't often lose by that amount of points.

"They made it really difficult for us at the contact and the four yellow cards signified that.

"They got away with a lot more, they are very good at it and we didn't deal with it well enough.

"We've got to win away at Scarlets now and make sure the players have the right mind-set."

"The crowd were fantastic once again tonight. We needed more composure which we've struggled with over the past few weeks. But we'll take a win over Leinster any day.