The Champions Cup returns to Sky Sports in January, with fixtures for rounds 5 and 6 announced by EPCR.
On Friday January 16, Leinster host Montpellier at the RDS Arena in Dublin, with both sides still in the hunt for a place in the quarter-finals.
The Irish province top the standings in Pool 5, and Montpellier are five points behind in second place. A win for Jake White's side would take the fight for an automatic place in the knock-outs into the final round of the regular season.
On Saturday January 17, we head to Galway where Connacht host Zebre at the Sportsground. Connacht recorded a sensational result against Wasps in round 4, scoring a try with no time remaining before Jack Carty slotted the touchline conversion for the victory.
An EPCR statement confirmed that the lineout from which Connacht scored the try should not have been allowed due to time being up before the ball was kicked to touch, but despite the officiating error the result will stand.
Connacht's win has made Pool 2 the most closely-fought of all the groups, with Wasps, Connacht and Toulouse all on 13 points. If Connacht are going to push for a place in the quarter-finals, they will want a handsome bonus-point win over the Italians to help them along.
After the Sportsground clash, we have Northampton up against Castres, with Saints out of contention after their disastrous 60-13 loss to Leinster in round 4.
However, Castres' win over Montpellier keeps their slender hopes of qualification for the knock-outs alive, and success over Jim Mallinder's side would set up a thrilling round 6 showdown between Castres and Leinster, which will also be live on Sky Sports.
Our third and final game on Saturday sees Glasgow face Munster in a keenly-anticipated affair at Scotstoun.
Munster suffered their first loss of the campaign against Leicester thanks to a 79th-minute Owen Williams penalty last time out, while Glasgow announced their European intention with back-to-back wins over last year's losing finalists Racing 92 in rounds 3 and 4.
On Sunday, Scarlets host defending champions Saracens at Parc y Scarlets. Mark McCall's side is flying high with four wins from four, but Scarlets will not be pushovers - they toppled Toulon in the fourth round in December.
We also have a host of action in round 6, including Leinster's trip to Castres as well as Munster v Racing 92 and Toulouse v Connacht.
Champions Cup on Sky Sports
Round 5
Friday January 13: Leinster v Montpellier (7.45pm)
Saturday January 14: Connacht v Zebre (1pm)
Saturday January 14: Northampton v Castres (1pm)
Saturday January 14: Glasgow v Munster (5.30pm)
Sunday January 15: Scarlets v Saracens (1pm)
Round 6
Friday January 20: Castres v Leinster (7.45pm)
Saturday January 21: Ulster v Bordeaux-Begles (1pm)
Saturday January 21: Sale v Scarlets (3.15pm)
Saturday January 21: Munster v Racing 92 (5.30pm)
Sunday January 22: Toulouse v Connacht (3.15pm)