Referee Scott Mikalauskas sends Adam Tangata to the sin-bin for that late hit on Jordan Lilley.

Fax are down to 12 men for the next 10 minutes.

No punishment for anything in the melee which followed.

Jordan Lilley is taken out by Adam Tangata after kicking forward on the last tackle and it is all kicking off inside the Bulls half.

What will the referee make of all that?

Halifax work their way into the Bulls 20 and then Scott Murrell tries to slip through a grubber kick on the last tackle.

But a black shirt is alive to the danger and falls onto the loose ball.

A knock-on from Halifax gives the Bulls field position just inside the visitors' 40 metre line, but the Bulls can't make the most of it and give away a penalty.

Brian Noble
Ex-Great Britain coach on BBC Two

That's about taking your opportunities. Halifax blew an opportunity and Bradford took the one they've been offered.

Image source, Getty Images

Halifax threaten as Scott Murrell sets up Ben Kavanagh to rip through the centre of the Bulls defence, but then they lost the ball with the next pass.

It's actually a brilliant intervention from Bulls hooker Matty Wildie which snuffs out the danger.

Halifax looked set to score there.

Kevin Larroyer is coming on for Fax second row Ed Barber, who got to his feet rather gingerly after taking a blow to the head after getting into the wrong position while making a tackle.

The Bulls restart on the fifth tackle inside the Halifax half.

Fax full-back Quentin Laulu-Togaga'e does well to gather a high kick from Jordan Lilley as Bradford end another set of six.

Both sides are feeling each other out, with defence on top so far, but an early kick from Fax gives the Bulls possession just inside their own half.

There's a brief break in play with Halifax's Ed Barber down on the turf needing treatment.

Jonathan Davies
Former Wales international on BBC Two

It's an old-school local derby. It captures the imagination. It's brilliant for both these clubs. This is their final.

Bradford have a decent first set of six before Jordan Lilley splits the Fax full-back and winger with his kick upfield.

The visitors respond and Adam Tangata gets them over halfway before Scott Murrell puts up the first high kick of the day.

Ethan Ryan just about comes across to gather it in front of David Foggin-Johnston.

Halifax get us started at Odsal.

Which Championship side will seize the final Challenge Cup semi-final spot?

Only points difference separates the clubs in the table after 15 league games, but Halifax won 21-14 when they met at the Summer Bash in Blackpool two weeks ago.

Scott Mikalauskas is the man in charge of this one.

Bradford are in predominantly black, with Halifax in their traditional blue and white.

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The teams are coming out onto the pitch and kick-off is moments away.

Halifax centre Steve Tyrer makes his 200th appearance for the club.

Scott Grix, on loan from Huddersfield, starts but France second-rower Kevin Larroyer is among the replacements.

Grix's younger brother Simon is Fax head coach.

Halifax: Laulu-Togagae, Saltonstall, Tyrer, Butler, Sharp, Murrell, Grix, Kavanagh, Moore, Tangata, Cooper, Barber, Fairbank.

Interchanges: Fleming, Larroyer, Morris, Woodburn-Hall.

Bradford head coach John Kear brings ex-New Zealand centre Jake Webster, Dalton Grant and Rowan Milnes back into the starting 13.

The trio all missed last weekend's trip to Featherstone Rovers through injury as the Bulls lost 42-4.

Bradford: Ryan, Grant, Webster, Oakes, Foggin-Johnston, Lilley, Milnes, Kirk, Wildie, Crossley, Minchella, Farrell, Hallas.

Interchanges: Wood, Peltier, Flanagan, Storton.

Hull FC, Warrington and St Helens have already booked their places in the last four of the Challenge Cup, but who will grab the final spot?

Either Bradford Bulls or Halifax - both five-time winners of this famous competition - will become the first Championship side to reach the semi-finals since 2006.

Odsal is the venue to decide who will progress to next month's Challenge Cup triple-header at the University of Bolton Stadium.

Kick-off will be on the way soon.

Image source, Getty Images