Heineken Champions Cup Round 4: All you need to know

There is plenty at stake for all four Irish provinces heading into the final round of pool fixtures in the Heineken Champions Cup and Challenge Cup.

Leinster have already qualified for the Champions Cup knockout stages but can secure home advantage for the round of 16 and beyond with victory over Racing 92 at the Aviva Stadium on Saturday.

Munster look set to join Leinster in the last 16 and could even clinch a home match in the next round, depending on how they fare against five-time winners Toulouse on Sunday, while Ulster also remain in contention despite losing all three pool matches to date. They host Sale Sharks in Belfast on Saturday.

Connacht are guaranteed a spot in the Challenge Cup knockouts and travel to Newcastle on Saturday knowing a positive result will ensure they are playing at the Sportsground in the next round.

TV Leinster v Racing 92 is live on RTÉ2 and RTÉ Player from 2.30 on Saturday (kick-off 3.15pm).

Ulster v Sale Sharks (Saturday, 8pm) and Toulouse v Munster (Sunday, 3.15pm) are live on BT Sport.

Newcastle Falcons v Connacht (Saturday, 5.15pm) is live on epcrugby.tv.

RADIO Saturday Sport on RTÉ Radio 1 will have live commentary of Leinster v Racing 92.

ONLINE Follow our live blogs on rte.ie/sport and the RTÉ News app with match reports and reaction from around the grounds.

WEATHER Conditions look ideal for Leinster's meeting with Racing 92 at the Aviva Stadium, where temperatures of around 8C are forecast. There is the chance of the odd rain shower, though.

It should also be dry for Ulster’s evening kick-off with Sale Sharks at Kingspan Stadium, with temperatures of around 7C and a moderate southerly breeze.

Colder conditions are predicted for Connacht’s trip to Kingston Park to face Newcastle Falcons.