Saturday June 9
(3) Catalan Dragons v (1) Wigan
Dragons boss Trent Robinson has been able to welcome a number of key players back for the on-the-road clash in Montpellier. Full-back Clint Greenshields, centre Setamaita Sa and winger Damien Blanch all return, while forward Steve Menzies is set to become Super League's oldest-ever player.
Wigan's forward pack has been boosted by the return of Lee Mossop and Chris Tuson, although Gareth Hock remains banned. Teenagers Dominic Crosby, Jack Hughes, Rhodri Lloyd and Logan Tomkins have kept their places.
Last season: Catalan Dragons 20 Wigan 12, Wigan 28 Catalan Dragons 47
Last six league matches: Catalan Dragons W L W W W L, Wigan W W W W W W.
Top goalscorer - Scott Dureau (Catalan Dragons) 65; Pat Richards (Wigan) 41.
Top tryscorer - Vincent Duport (Catalan Dragons) 11; Josh Charnley (Wigan) 21
(14) London Broncos v (13) Widnes
French hooker Julien Rinaldi is back in the London squad following a two-month absence with a knee injury, while prop Karl Temata also returns. Centre Will Lovell is included after an impressive debut at the Magic Weekend, but key half-back Michael Witt (shoulder) is out, as is Chris Melling (neck).
Half-back Joe Mellor misses out for Widnes after being given a one-game Rugby Football League suspension for a dangerous tackle against Huddersfield last weekend. Captain Jon Clarke returns from a ban of his own, and is likely to share the hooking duties with loanee Paul McShane.
Last season: No corresponding fixture
Last six league matches: London Broncos L L L L L L, Widnes L L L L L W
Top goalscorer - Michael Witt (London Broncos) 34; Patrick Ah Van (Widnes) 13
Top tryscorer - Michael Robertson (London Broncos) 9; Paddy Flynn (Widnes) 7Sunday, June 10
Castleford (12) v Salford (10)
Castleford coach Ian Millward is giving prop Nathan Massey the chance to shake off a knock, and must also decide whether to recall full-back Richard Owen who was dropped for the defeat at Bradford. Utility man Ryan McGoldrick could start after an impressive substitute performance against the Bulls.
Salford coach Phil Veivers is unlikely to make any changes to the side that got the better of Catalan last time out. Winger Ashley Gibson is ruled out, though, as the Reds chase a third straight win.
Last season: Salford 8 Castleford 15, Castleford 52 Salford 20
Last six league matches: Castleford L L W L L L; Salford L L L D W W
Top goal-scorer: Kirk Dixon (Castleford) 35; Daniel Holdsworth (Salford) 47
Top try-scorer: Josh Griffin (Castleford) 10; Ashley Gibson (Salford) 9
Wakefield (11) v Hull (5)
Danny Kirmond will captain Wakefield for the first time since being confirmed as coach Richard Agar's new permanent captain. Oliver Wilkes has shown no ill-effects after recovering from a broken thumb and should be involved.
Hull hope to have centre Kirk Yeaman available for selection. A foot injury and most recently illness have kept him on the sidelines, but coach Peter Gentle needs him owing to the absence of both Tony Martin and Will Sharp. Richard Whiting could drop back from the pack if needed.
Last season: Wakefield 18 Hull 52, Hull 6 Wakefield 20
Last six league matches: Wakefield L W L L W W; Hull L L W W L D
Top goal-scorer: Paul Sykes (Wakefield) 22; Danny Tickle (Hull) 64
Top try-scorer: Peter Fox (Wakefield) 8; Danny Tickle (Hull) 9