Was that a deliberate knock on by Curtis Langdon?

Bulls are charged up as they roll through the phases early on but the Northampton hooker is up quickly to disrupt.

The referee decides it's just a scrum.

Johan Goosen of the Bulls gets us up and running.

Here we go then, both sets of players make their way to the field.

We're all set for a thriller in South Africa...

Back to today then, Northampton will have to contend with a physical battle at altitude.

The Loftus Versfeld Stadium is at an altitude of 1,350 metres.

"I don't think many of us - if any of us - have actually played out there, at altitude, in the heat, so we're incredibly excited," England full-back George Furbank told BBC Radio Northampton.

"Dows (boss Phil Dowson) has made it pretty clear 'this is not a holiday, boys' and we're going out there to do a job.

"You look at their home record, they're incredibly hard to beat, but we back ourselves and we feel if we put in a performance we can beat them."

Elsewhere, Munster were beaten 16-14 by Castres on a frustrating and bruising night for the Irish province at the Stade Pierre Fabre.

Find out what happened there here.

Image source, Inpho

So what has happened in round two so far..?

Sale righted their Champions Cup campaign as they took advantage of Racing 92's errors and inconsistencies to earn a comfortable victory at Salford Community Stadium.

Jean-Luc du Preez and Tom Roebuck's tries established a five-point half-time advantage for the hosts, before Joe Carpenter scampered in and Ben Curry shoved over to ensure the Sharks could see out the contest in comfort.

With the home fans serenading their team, Rob du Preez powered over, only to see his try chalked off for a knock-on. But it couldn't take the shine off a deeply satisfying night for coach Alex Sanderson.

Read our report here.

Image source, Getty Images

Bulls: Le Roux, De Klerk, Moodie, Kriel, Williams; Goosen, Papier; Steenekamp, Van der Merwe, Louw, Vermaak, Van Heerden, Coetzee, Louw (capt), Hanekom.

Replacements: Wessels, Tshakweni, Klopper, Slabbert, Nama Xaba, Burger, Chamberlain, Gans.

Northampton: Furbank (capt); Freeman, Dingwall, Hutchinson, Sleightholme; Smith, Mitchell; Iyogun, Langdon, Millar-Mills, Mayanavanua, Lockett, Coles, Pollock, Augustus.

Replacements: Wright, Haffar, Davison, Munga, Scott-Young, Pearson, McParland, Hendy.

The Bulls, meanwhile, make five changes to their starting line-up beaten by Saracens in their Pool 3 opener.

The backline remains unaltered but Akker van der Merwe and Wilco Louw return in the front row, while flankers Marcell Coetzee and Elrigh Louw pair up in the back row.

We'll have the full line-ups next...

Northampton have made three changes for their trip to Loftus Versfeld.

George Furbank returns to captain the side from full-back after being rested for Saints' opening victory over Castres at Franklin's Gardens last weekend.

Scotland's Rory Hutchinson comes in at inside centre, while Alex Coles makes his first start of the season in the back row.

Image source, Getty Images

Round two of this season's Champions Cup kicked off on a cold Friday night in Salford as Sale Sharks beat Racing 92.

The action continues on Saturday and Northampton will want to make it two wins from two as they face Bulls in South Africa...

Image source, Getty Images

Kick off in Pretoria is at 13:00 GMT...