O'Gara's La Rochelle and Montpellier progress

Ihaia West scored 16 points as Ronan O'Gara's La Rochelle booked a Heineken Champions Cup quarter-final showdown with Montpellier after a hard-fought victory over 14-man Bordeaux-Begles.

The fly-half scored a first-half try and kicked four conversions and a penalty as Ronan O'Gara’s much-changed side, who took an 18-point lead into the second leg, triumphed 31-23 against a dogged Bordeaux outfit who fought to the final whistle despite having number eight Maama Vaipulu sent off early on.

A 62-36 aggregate win means Montpellier will travel to the Stade Marcel Deflandre in the last eight.

Elsewhere, England star Marcus Smith suffered missed conversion misery as comeback kings Harlequins fell agonisingly short of another spectacular recovery act despite beating opponents Montpellier 33-20.

The Quins fly-half drifted a straightforward conversion attempt of wing Louis Lyangh's 75th-minute try wide, and Montpellier won the round-of-16 clash 60-59 on aggregate.

The English champions, 14 points adrift after last weekend’s first leg when they trailed 34-0 at one stage, looked on course to secure a European last-eight spot for the first time since since 2013.

They needed to evoke memories of last season’s stunning Premiership play-off victory over Bristol, when Quins were 28 points down before winning after extra time.

And first-half tries from full-back Huw Jones, number eight Alex Dombrandt, centre Joe Marchant and Lynagh – all converted by Smith – underlined Quins’ appetite for another memorable turnaround.

Montpellier, the French Top 14 league leaders, stayed in contention through tries centre Yvan Reilhac and full-back Julien Tisseron.

Fly-half Louis Forsans kicked two conversions and a penalty, while South African World Cup winner