That's all from us as Ulster progress to the semi-finals of the Challenge Cup where they will face Benetton or Exeter Chiefs.

You can read Andy Gray's report from a wet and windy Affidea Stadium here.

Goodnight!

Andy Gray
BBC Sport NI at the Affidea Stadium

Whisper it quietly, but Ulster are one game away from a first European final since 2012.

It's been a remarkable turnaround from last year, and full credit has to go to Richie Murphy and his players.

I know that wasn't the strongest La Rochelle side, but Ulster have been very good tonight and thoroughly deserve their place in the last four.

It's all over and Ulster are in the semi-final of the Challenge Cup.

They dominated La Rochelle if truth be told and now await the winners of Benetton and Exeter in the last four.

Ulster win possession but advantage was being played, penalty La Rochelle

Last hurrah by the French side in stoppage time, as they pummel the Ulster line...

Another penalty to Ulster, this time on the right flank and replacement Jake Flannery hammers the ball into the La Rochelle corner.

After some handbags being thrown inside their own half, Ulster win a penalty and kick to touch just inside the La Rochelle half.

Ulster really have their foot on the proverbial throat of La Rochelle now.

With the weather worsening and only six minutes remaining, the French side could be forgiven for thinking of the flight home to balmier conditions.

Andy Gray
BBC Sport NI at the Affidea Stadium

I'm not entirely sure why or how, but Tom Stewart played that entire last phase without a shirt on.

It's not the night to be showing off your physique. It hasn't got any warmer.

Sometimes it's better not to be asking too many questions.

La Rochelle think they have driven over the line, but Ulster manage to hold the ball up. Not sure how that did not result in a try there.

Ulster with a goal-line drop-out.

.

La Rochelle win a penalty 40-metres out and kick into the Ulster 22.

You feel they need something from this attack.

Andy Gray
BBC Sport NI at the Affidea Stadum

Ronan O'Gara is standing a bit down from the media gantry and he looks as frozen as the rest of us.

There's been some animated conversations with his coaching staff throughout the game, but he's now standing pretty still, staring at his players trying to work something while muttering the odd word.

A few errors creeping in from both sides. Firstly, Zac Ward kicks possession away straight to a La Rochelle shirt, then the French team are guilty of a sloppy knock-on.

To be honest Ulster won't mind as long as the clock keeps ticking.

Ulster bring out the replacements with Harry Sheridan and Scott Wilson replacing Tom O'Toole and Juarno Augustus.

Andy Gray
BBC Sport NI at the Affidea Stadium

It wasn't exact as in-sync as they would have planned, but the Ward brothers link up for a big score.

Every time La Rochelle have threatened to hit back this Ulster team have had an answer.

Image source, Getty Images