Cedric Heyman's run seemed certain to produce a try in the 49th minute but Lamboley failed to hold on to the winger's pass inches short of the Leinster line.

BBC: Leinster 20-13 Toulouse

The Argentine star missed a chance to kick Leinster further ahead but the home team got another boost in the 25th minute when Toulouse forward Gregory Lamboley was sin-binned as the visitors defended desperately in their own 22.

BBC: Leinster 20-13 Toulouse