Leinster Rugby head Pool 1 after earning a seventh win in eight meetings with Northampton Saints who they take on in their annual Aviva Stadium fixture on Saturday live and free-to-air on Channel 4, Virgin Media and BT Sport. Over 40,000 tickets have already been sold for the match.

ASM Clermont Auvergne will host the last European fixture of 2019 when Bath Rugby visit Stade Marcel-Michelin on Sunday and the tournament’s leading points scorers (100) have an exceptional record to preserve having won their last 12 home tournament matches against Gallagher Premiership opposition in a run stretching back to 2008.

If selected, Bath’s Rhys Priestland will make his 50th tournament appearance against Clermont whilst Eddy Ben Arous will reach the same landmark if he appears in Racing 92’s home game with Ospreys tomorrow evening as the twice beaten-finalists look to strengthen their control of Pool 4.

Elsewhere in Heineken Champions Cup, Round 4:

Exeter Chiefs are in pole position to qualify for the quarter-finals for a second time as they go into the home leg of their back-to-back battle with Premiership rivals, Sale Sharks, on Sunday.

Gloucester Rugby were the only other Premiership side to register a victory in Round 3, moving to second spot in Pool 5 in the process. The Cherry and Whites take a 100% winning record against Connacht into their Saturday meeting at The Sportsground where Gloucester won a Challenge Cup quarter-final in 2018.

Ulster Rugby have a one-point lead at the top of Pool 3 and they kick off the round tomorrow evening against Harlequins looking for a second win in three seasons at the Twickenham Stoop.

Click HERE for Heineken Champions Cup, Round 4 fixture and broadcast details

Bristol Bears are the only side with a maximum haul of 15 points across both European tournaments and they top Pool 4 of the Challenge Cup after registering a third resounding win of the campaign against 2017 winners Stade Français Paris.

The BT Sport cameras will be at Stade Jean Bouin to see if the Premiership club can consolidate their nine-point advantage, with just two match points covering the other three clubs.

Other key notes from Round 4 of the Challenge Cup are as follows:

Worcester Warriors go in search of their 50th Challenge Cup victory when they make the short journey to face Dragons tomorrow evening in Pool 1. Castres Olympique lie only two points adrift in third place as they welcome Enisei-STM to Stade Pierre Fabre for the first time.

Leicester Tigers faced Rugby Calvisano in the pool stage of the 2001/02 Heineken Cup before going on to be crowned champions for the second time. The Pool 5 frontrunners have won all three matches so far and their return fixture against the Italians is one of several matches to be streamed free for fans registering on ChallengeCupRugby.com this weekend.

RC Toulon have made no secret of their desire to feature in this season’s Challenge Cup final on their doorstep in Marseille, 10 years after being edged out for the trophy by Cardiff Blues at the Stade Vélodrome. The three-time European champions have won all three of their matches to date as they head to the Madejski Stadium to face London Irish on Saturday.

Click HERE for the Challenge Cup, Round 4 fixture and broadcast details