Right, that's where we leave you for now, from a thriller of a Challenge Cup semi-final.

That's two places in the final four decided, but there's still two more teams to force their way into the semis.

Huddersfield take on Hull FC in about half an hour's time, with live commentary on this very page.

You've got the choice of commentary from BBC Radio Leeds or BBC Radio Humberside for that one.

But this is where I leave you. Goodbye for now.

St Helens coach Kristian Woolf told BBC Sport:

"I'm really happy I thought we played really tough, i think we did enough to win but we weren't at our best.

"That's a sign of our team, to come on a hard road trip and get a win like that.

"I thought we settled down well in the second half and when we went back to being us, we were back in control of the game."

St Helens loose forward Morgan Knowles told BBC Sport:

"It's always a tough trip coming over here and Catalans have been a top team for the past few years.

"We've had a few arm wrestles against them and it's great to get through.

"If you've got your defence right then we've got enough strength in the park that we're going to find individuals over time."

Catalans head coach Steve Mcnmara told BBC Sport:

"I thought we started well but there was a horrible five minute spell where we conceded three tries in the first half.

"We got back in it and I thought there was a chance to put pressure on Saints, we were going okay in our last plays but we conceded some soft tries.

"I thought that we started the game really well. Our plan looked like it was going to work but we conceded too many easy tries and that cost us."

All over at Stade Gilbert Brutus and the holders are through.

It was a comfortable display from St Helens despite Catalans giving them a game in their various attempts at a comeback.

Brian Noble
Ex-Great Britain coach on BBC One

We've seen some super skills from both sides, some super attack from both sides.

The difference has been defence and the way Saints apply themselves.

Kurt Butler: Game, set, match. Merci.

Tyrone May is covered in claret and the game is paused as the Catalans man receives treatment, before he eventually walks from the field.

Just under 10 minutes remain.

Robbie Hunter-Paul
Former New Zealand international on BBC One

Jonny Lomax take a bow, when he gets that ball there is nothing really moving out wide but he shapes to do the long pass and as the Catalans defenders shift out it gives the opportunity for a one-on-one.

Batchelor is too big, too strong - it's try time.

Such is the fight in this Catalans side that, let's not forget, they were in a similar position at the Magic Weekend last September and managed to beat St Helens that evening in Newcastle.

Just over 10 minutes remain, are we in for a stunning fightback?

Great set of six from Catalans as they continue to press St Helens heading into the final stages of this game.

They kick on the last tackle, but Saints regain the ball and Mark Percival almost catches the Dragons out as he races almost to halfway in response.

Brian Noble
Ex-Great Britain coach on BBC One

This Catalans team can't quite get parity. They do some really good things and they've already exceeded the number of points teams normally score against St Helens but what they can't do is stay in the mix.

They can't concentrate for six, eight or 10 plays that it takes to make it an intense tussle.

Brian Noble
Ex-Great Britain coach on BBC One

It's a pass and a half from Josh Drinkwater, he's threaded the needle there.

What a game.

Robbie Hunter-Paul
Former New Zealand international on BBC One

St Helens are relentless, they just don't ever stop.

Jonny Lomax is milimetres short for St Helens right at the corner as the visitors have Catalans on the ropes again.

Of the two teams, Saints look more likely to score at the moment.

Sam Tomkins' afternoon is over, with the Catalans' full-back's calf injury proving too much for him to return.

This looks to be a long way back for the hosts, now.