Overview
- Rieko Ioane is listed among the replacements and is set to make his Leinster debut after arriving in Dublin last week.
- Leinster are without James Lowe, Andrew Porter, Robbie Henshaw, Ryan Baird and Hugo Keenan through injury, with James Ryan suspended and Tadhg Furlong named on the bench.
- Paddy McCarthy earns his first Champions Cup start at loosehead alongside his brother Joe, and all 15 Leinster starters are full Test internationals.
- Harlequins travel with a heavily rotated squad during a poor Premiership run, resting Marcus Smith, Fin Baxter, Chandler Cunningham-South and Jack Kenningham under mandatory rest rules.
- The game is set for the Aviva Stadium this evening, with outlets listing different referees for the fixture in Craig Evans or Gianluca Gnecchi.