In the wet conditions there was never any chance of flowing rugby. In fact all that flowed was the heavy rain, which made attacking rugby a hazardous occupation and ensured that the game was a battle between the two packs.
In the event, Leinster were helped by two yellow cards shown first to Glasgow lock Tom Ryder and then Glasgow flanker Chris Fusaro. The visitors also profited from inaccurate goal kicking by Glasgow, Peter Horne missing both his efforts and then Scott Wight failing with his single attempt.
In contrast, Leinster outhalf Ian Madigan nailed two kicks from three shots at goal to steer his side to victory.
Crucially for Leinster’s future campaign and that of Ireland, back row Sean O’Brien came through his comeback match safely, displaying his trademark powerful ball-carrying and being prominent in defending round the fringes.
GLASGOW WARRIORS : P Murchie; T Seymour (B McGuigan 53), A Dunbar, P Horne, D Van Der Merwe; R Jackson (S Wight 56), S Kennedy; O Fainga’anuku (G Hunter 39 (M Low 60)), P MacArthur (F Gillies 74), M Cusack (M Low) , T Swinson, T Ryder, R Harley, C Fusaro (R Wilson 59), J Strauss (J Eddie 68).
LEINSTER : Isa Nacewa; D Kearney, B Macken, A Goodman, F Carr; I Madigan, I Boss; J McGrath (J O’Connell 64), A Dundon (T Sexton 61), J Hagan (M Moore 67), L Cullen, Q Roux (D Toner 32), K McLaughlin, S Jennings, S O’Brien
Referee: N Hennessey (WRU) Attendance 3790