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Champions: Saracens 55-36 Connacht (R)
Champions: Bordeaux Begles 36 -17 Bristol Bears (R)
Challenge: Lions 35-13 Newcastle Falcons (R)
Champions: Leinster 37-27 Sale (R)
Champions: Cardiff Rugby v Bath (20:00 GMT) - radio
Champions: Ulster v Racing 92 (20:00 GMT) - live text & radio
Saracens 43-17 Connacht
Maro Itoje is shown a yellow card for a high tackle, bringing both sides level with 14 players each for a couple of minutes.
Cian Prendergast will be back on the pitch soon.
Lucio Cinti Luna
Saracens running riot!
Saracens making the most of their one man advantage to stretch the Irish side. The ball is worked wide to Lucio Cinti Luna who still has a lot to do as he steps fullback John Porch to finish in the corner.
Owen Farrell goes wide with the difficult conversion.
Image source, Inpho
Image source, InphoSean Maitland
Saracens look like they might run away with it now.
The home side managed to suck in Connacht defenders before a superb 20-metre skip-pass from Owen Farrell went wide to Sean Maitland who dotted down in the corner.
Farrell nails the conversion and the momentum is now firmly with the hosts.
Image source, Getty ImagesSaracens 31-17 Connacht
Cian Prendergast shown a yellow card for going off his feet in an act of desperation as Saracens surged towards the Connacht line.
The visitors down to 14-men now.
Owen Farrell
Owen Farrell with an easy shot at the posts to edge his side further ahead.
Image source, InphoSaracens 28-17 Connacht
Jack Carty throws a loose pass and Saracens hooker Jamie George intercepts and surges forward with the ball before offloading to Andy Christie.
Cian Prendergast is penalised for going off his feet at the ruck and Saracens have a penalty in a good position.
They opt for the posts.
Saracens 28-17 Connacht
Saracens have good field position now after Connacht full-back John Porch knocks the ball on from an up-and-under.
A scrum in this position is the ideal attacking platform for Mark McCall's side who seem to be growing in confidence as the game goes on.
Olly Hartley
A clever kick through by Alex Goode is gathered by centre Olly Hartley who runs in under the posts on his Champions Cup debut.
Perfect start to the second half for the English Premiership side who have now secured their bonus point.
Owen Farrell adds the extras.
Image source, Getty Images
Image source, InphoSaracens 21- Connacht
Luc Ramos blows his whistle and gets the second half underway.
Connacht look to clear their lines after receiving the kick but Saracen's Alex Goode launches an attack and now the home side are deep in the Connacht half...
Saracens 21-17 Connacht
Phew!
It has been a chaotic, action-packed, end-to-end first half.
Neither side looks fully in control and the game is still very much up for grabs, with the hosts going in with a narrow lead at the break.
Connacht are struggling to cope with the powerful Saracens lineout maul, but have done enough themselves to be very much within touching distance.
An exciting and competitive second-half is definitely in store!
Jamie George
Saracens strike again!
Try number three and almost an exact replica of their second try on the other side of the pitch. A lineout maul once again sees Jamie George dotting down after a powerful shove.
Connacht really struggling to deal with the Saracen's maul.
Owen Farrell skews the conversion wide as the referee signals half-time.
Owen Farrell
With just over a minute in the first half to go, Saracens win another penalty in Connacht's half and they point to the posts.
Owen Farrell is accurate from the kicking tee to move his side within one point of the visitors.
Jamie George
Saracens use the maul to drive towards the Connacht line with a powerful shove.
Jamie George manages to steer from the back and powers his way over the line to put his side back within touching distance, now just four points down.
Owen Farrell goes wide with a tricky conversion.
Image source, Getty ImagesSaracens 8-17 Connacht
The chaotic end-to-end nature of this game continues, with Saracens finding themselves in possession on the Connacht five-metre line after winning a scrum penalty against the visitors on their put in.
Saracens have the lineout and have the opportunity to attack...
Image source, Getty ImagesJack Carty
Owen Farrell is deemed to have overreacted to a hard shot by Shayne Bolton and there is a bit of pushing and shoving, but it is Farrell who gets penalised.
Jack Carty takes the opportunity to slot the kick and give his side another three points.
Image source, Getty Images
Image source, Getty ImagesCaolin Blade
Connacht take the lead once again!
This time it is Caolin Blade who touches down.
A series of carries close to the line made a try look inevitable, but it was the scrum-half who took a risk and spotted a gap at the side of the ruck to stretch over the line for his side's second try of the game.
Jack Carty nails the conversion and Connacht take the lead.
Image source, InphoSaracens 8-7 Connacht
Connacht pummeling the Saracens' line now.
Carry after carry but can they force their way over the line?
Saracens look determined in defence.
Image source, Getty ImagesOwen Farrell
Saracens awarded a penalty after a spell of possession in the Connacht half.
They opt for the posts and Owen Farrell makes no mistake from the kicking tee this time to give his side a narrow lead.
Saracens 5-7 Connacht
Both sides exchanging possession and struggling to gain the ascendency.
A scrappy start to this game which is becoming a bit of an arm wrestle.
Saracens surging forward at the minute and have just won a penalty...
Image source, Getty ImagesBundee Aki
It's didn't take long for Connacht to hit back with the perfect response!
Jack Carty deserves credit for an excellent penalty kick into the corner, making his side a lot of metres.
The resultant lineout proved an effective platform as Connacht steered towards the line and centre Bundee Aki gets involved in the action, crashing over from close distance to level the game.
Jack Carty is accurate with the conversion to put the visitors ahead.
Image source, Getty Images