Are Hull KR on the board? Jamie Ellis thinks so and the referee says 'try' on the field.

If Hull KR are going to get a window of opportunity this might be it as Ava Seumanufagai is sent to the sin-bin for 10 minutes for a high shot.

Can Rovers make the most of their one-man advantage?

No alarms in the Leeds rearguard so far. Richie Myler is looking solid at full-back as he retrieves Rovers kicks, and they patiently work through their own sets.

Rhinos don't need to force the pace of this game.

It's a decent enough first set of the half by Rovers, but they need to score - and score quickly.

And we are back under way in St Helens.

Hull KR will get first use of the ball and they need a fast start if they want to raise hopes of a comeback.

A reminder that the remaining two Challenge Cup quarter-finals take place tomorrow and will be covered across the BBC.

Warrington face St Helens in a repeat of last season's final at 14:30 BST on BBC One, before Hull FC take on Wigan at 17:00 BST on BBC Two.

We'll also have live text of both and they will be covered on BBC local radio.

If you missed it earlier, the first quarter-final was a humdinger of a game.

After leading early on, Catalans were never behind until Dan Sarginson completed Salford's comeback in golden point extra-time to send the Red Devils - last season's Grand Finalists - into the last four.

Click on the link below to take a read of my match report if you like - it's been a busy evening!

Image source, Rex Features

A totally dominant first-half performance from Leeds.

Five tries from five different scorers for Richard Agar's side, with Ava Seumanufagai, Ash Handley, Tom Briscoe, Harry Newman and Kruise Leeming all going over.

Indiscipline from Hull KR hands Leeds a penalty with time running out in the first half, and they pump the ball long for field position.

They will have a full set to try to extend their lead before the hooter.

The RFL's disciplinary panel could be busy again next week.

After banning Warrington's Tom Lineham for eight games on Tuesday for a low grab on Castleford's Alex Foster, Hull KR's Jamie Ellis has just been placed on report following an allegation of biting on James Donaldson.

Image source, SWPIX.COM

Leeds are completely in control of this on the scoreboard, but if Hull KR can get a score before half-time then suddenly it becomes a very different team talk for Tony Smith.

Rovers do appear to be growing in confidence after not conceding since the 20th minute.

We've not had a try for 12 minutes. What's going on?

While we ponder that question, we have a break in play as Leeds' Alex Mellor receives treatment to a cut on his head.

Leeds defend that set really well as Hull KR are actually forced backwards.

And when the low grubber kick comes in off the last tackle, there is Robert Lui to swoop on the loose ball.

Thou shalt not pass.

Image source, SWPIX.COM

Well might Ash Handley smile. Everything has gone right for Leeds so far.

Although, as I say that, they do give away a repeat set deep inside their own half.

Almost, almost for Hull KR. But not quite.

Shaun Kenny-Dowall beats Ash Handley to a hanging kick and looks set to get Hull KR on the scoreboard.... until Richie Myler nips in with a try-saving tackle.

If Rovers are going to get back into this they just can't afford simple mistakes like loose passes which don't go to hand as they cough up possession again.

Leeds look lethal with the ball this evening.

A first spell of sustained pressure inside the Leeds 20 for Hull KR.

Rovers move the ball left then right, and launch a high kick which Ethan Ryan can't gather. The Rhinos' defence holds out for now.