The Champions Cup reaches the quarterfinal stages with five former champions into the final eight. We take a look at the team news ahead of the weekend's game.
Leinster vs. Wasps
Aviva Stadium, Saturday 15:15 (BST)
Rory O'Loughlin, Josh van der Flier and Isa Nacewa all came through the PRO12 game against Cardiff with no issues. Sean Cronin (hamstring), Jack Conan (calf) and Zane Kirchner (hamstring) are back in contention as is Dave Kearney, who returned to training after a toe injury. Rob Kearney (knee), Jamie Heaslip (back), Dominic Ryan (knee) and Jordi Murphy (ACL) are all unavailable.
Wasps will hope flanker James Haskell recovers from a dead leg to face Leinster in Dublin. Willie Le Roux and Alapati Leuia are going through the return to play protocols following head knocks at the weekend and a call will be made on Friday.
Munster vs Toulouse
Thomond Park, Saturday 17:45 (BST)
Munster director of rugby Rassie Erasmus rated Conor Murray's chance of being fit at 50-50 on Monday, and he returned to training alongside Keith Earls, Donnacha Ryan, CJ Stander and Simon Zebo having been rested for last weekend's PRO12 clash with Zebre. Centre Francis Saili (knee) and fly-half/centre Ian Keatley (knee) are both ruled out as is new signing Jean Kleyn.
Head coach Ugo Mola stated on Tuesday he will travel with a squad of 26. Sébastien Bézy is a fitness concern having come back into training on Tuesday. Yann David, Chris Tolofua, Edwin Maka all miss out due to injury, while Gillian Galan is hoping to return. Forwards Francois Cros, Yacouba Camara, Richie Gray and Thierry Dusautoir are all set for a return.
Saracens vs. Glasgow Warriors
Allianz Park, Sunday 13:00 (BST)
Saracens will hope that they can replicate their eight-try performance against Bath. Mako and Billy Vunipola continued their return from injuries while the integration of England's Six Nations internationals was seamless.
Glasgow saw the return of Stuart Hogg, Ali Price and Finn Russell to their starting team against Connacht on Saturday. Fraser Brown and Alex Dunbar featured from the bench while Jonny Gray will look to continue his run of form that has him in Lions contention in the second row.
Clermont Auvergne vs. Toulon
Stade Marcel-Michelin, Sunday 15.15 (BST)
Clermont rested the majority of their players in their Top 14 defeat at Racing 92 at this weekend and will hope Camille Lopez slots back into a team having missed the last six games due to the Six Nations. His last game for Franck Azema's side came on Jan. 8.
Guilhem Guirado returned and played 33 minutes off the bench at the weekend, while Leigh Halfpenny returns following a break at the end of the Six Nations. Coach Mike Ford said at the start of the week that Francois Trinh-Duc will start at 10, having played at fly-half against Stade Francais.