In round one of the 2018–19 Champions Cup on 13 October 2018, a try from Stander and five points from the boot of Joey Carbery secured a 10–10 draw in Sandy Park against Exeter Chiefs, in a match in which Dan Goggin and Neil Cronin made their competitive European debuts, whilst Tadhg Beirne, who was Man-of-the-Match, Mike Haley and Joey Carbery made their European debuts for Munster. One week later, tries from Mike Haley, Rhys Marshall, Joey Carbery, who also kicked four conversions and one penalty in a Man-of-the-Match performance, Sammy Arnold and Andrew Conway helped Munster to a 36–22 bonus-point victory at home against Gloucester. In the December 2018 back-to-back Champions Cup fixtures against Castres, Munster won 30–5 in round 3 on 9 December, with tries from Rory Scannell, Stander and J. J. Hanrahan, who also scored 15 points off the kicking tee. In the return leg away to Castres on 15 December, the French side won 13–12, with Joey Carbery scoring all of Munster's points from penalties. In round 5 of the Champions Cup, Munster beat Gloucester 41–15 away from home on 11 January 2019, with the tries coming from Joey Carbery (2), Rory Scannell, Keith Earls and Andrew Conway and 16 points of the kicking tee from Carbery. In round 6, Munster beat Exeter Chiefs 9–7 in Thomond Park on 19 January 2019 to advance to a record 18th Champions Cup quarter-final. Joey Carbery scored all of Munster's points from penalties in a closely fought, physical game. Munster defeated Edinburgh 17–13 in their quarter-final in Murrayfield Stadium on 30 March 2019 to advance to a 14th Champions Cup semi-final, which Munster lost 32–16 to Saracens in the Ricoh Arena on 20 April 2019. Munster finished second in conference A in the 2018–19 Pro14 season, with 21 wins and 5 defeats, and beat Italian side Benetton 15–13 in their quarter-final on 4 May 2019, to secure a semi-final against provincial rivals Leinster in the RDS on 18 May 2019. which Leinster won 24–9, bringing to an end Munster's 2018–19 season. Munster were seeded in tier 2 when the draw for the 2019–20 European Rugby Champions Cup was made in Lausanne, Switzerland on Wednesday 19 June 2019, and were drawn in pool 4 alongside defending champions Saracens, Racing 92, who count former Munster players Donnacha Ryan and Simon Zebo amongst their squad, and fellow Pro14 side Ospreys.