All the latest team news, statistics, kick-off times and television details for this week's latest round of Super League games, including Leeds v Wigan.
Click here for the latest standings and full fixture list
Click on each fixture for the Sky Bet odds
Kick-off time: 2000 BST
Venue: AJ Bell Stadium
Television channel: Sky Sports 2
Salford coach Ian Watson has brought in Jake Bibby following the loss of centre Junior Sa'u with a leg injury sustained in the win over Widnes.
St Helens are boosted by the return of full-back Jonny Lomax from a three-match absence with a knee injury, with Tom Makinson reverting to the wing. Matty Fleming is called up in place of the injured Adam Swift and there is also a place in Keiron Cunningham's 19-man squad for Morgan Knowles.
Last season: St Helens 34 Salford 20, Salford 44 St Helens 10
Last six league matches: Salford W L W L W W St Helens W L L L W W
Top try scorers: Ben Murdoch-Masila, Gareth O'Brien & Junior Sa'u (Salford) 4; Mark Percival & Adam Swift (St Helens) 4
Top goal scorers: Gareth O'Brien (Salford) 22; Mark Percival (St Helens) 15;
Referee: J Child.
Kick-off time: 2000 BST
Venue: Mend-A-Hose Jungle
Castleford could have second rower Oliver Holmes making his first appearance of the season after overcoming injury, while winger Joel Monaghan continues to deputise for the sidelined Greg Minikin.
Huddersfield coach Rick Stone is set to recall half-back Ryan Brierley, who began his career at Castleford, after losing Danny Brough to suspension, while Gene Ormsby and Sam Wood are vying to replace injured winger Aaron Murphy.
Last season: Huddersfield 22 Castleford 30, Castleford 38 Huddersfield 34.
Last six league matches: Castleford W W W W L W Huddersfield L W L L D L.
Top try scorers: Greg Eden (Castleford) 10; Jermaine McGillvary (Huddersfield) 5.
Top goal scorers: Luke Gale (Castleford) 35; Danny Brough (Huddersfield) 12.
Referee: C Kendall.
Kick-off time: 2000 BST
Venue: Headingley
Television channel: Sky Sports 2
Leeds have second row forward Brett Delaney back after missing the win at Huddersfield with a groin injury, taking the place of Jordan Baldwinson, who returns to partnership club Featherstone.
Wigan are boosted by the return from injury of prop Ryan Sutton, second rower Liam Farrell and centre Oliver Gildart, while centre Anthony Gelling and prop Ben Flower have shaken off knocks sustained in the defeat by Hull.
Last season: Leeds 18 Wigan 16, Leeds 8 Wigan 40 Wigan 28 Leeds 6.
Last six league matches: Leeds W W L W W W Wigan W W W W D L.
Top try scorers: Adam Cuthbertson & Ryan Hall (Leeds) 4; Liam Marshall (Wigan) 5.
Top goal scorers: Liam Sutcliffe (Leeds) 15; Morgan Escare (Wigan) 18.
Referee: B Thaler.
Kick-off time: 1800 BST
Venue: Stade Gilbert Brutus
Television channel: Sky Sports 3
Catalans welcome back second rower Justin Horo, who missed the defeat at Castleford through illness, while full-back Thomas Bosc and former Wakefield prop Mika Simon return from injury. Brayden Wiliame misses his first match for the Dragons through injury.
Wakefield coach Chris Chester keeps faith with the team that beat Leigh, with Liam Finn starting at scrum-half and Dean Hadley sharing the hooking role with Kyle Wood.
Last season: Catalans Dragons 28 Wakefield 30, Wakefield 25 Catalans Dragons 24 Wakefield 28 Catalans Dragons 42.
Last six league matches: Catalans Dragons W W D L L L Wakefield L L W W L W.
Top try scorers: Richie Myler (Catalans Dragons) 4; Tom Johnstone & Ben Jones-Bishop (Wakefield) 3.
Top goal scorers: Luke Walsh (Catalans Dragons) 23; Sam Williams (Wakefield) 17.
Referee: G Hewer.
Kick-off time: 1800 BST
Venue: Leigh Sports Village
Leigh have hooker Liam Hood back from injury, taking over from Eloi Pelissier, while stand-off Martyn Ridyard stands by in case Josh Drinkwater fails to recover from the knee injury he sustained in the defeat at Wakefield.
Win-less Widnes are boosted by the return of scrum-half Tom Gilmore, who injured an ankle in the opening game of the season, while prop Manase Manuokafoa is set to make his first appearance of the season in place of Jack Buchanan after overcoming a knee injury.
Last season: No corresponding fixture.
Last six league matches: Leigh L W L W W L Widnes L L D L L L.
Top try scorers: Ben Crooks & Gareth Hock (Leigh) 3; Rhys Hanbury, Aaron Heremaia, Stefan Marsh & Lloyd White (Widnes) 2.
Top goal scorers: Ben Reynolds (Leigh) 17; Rhys Hanbury (Widnes) 8.
Referee: R Hicks.
Kick-off time: 1500 BST
Venue: Halliwell Jones Stadium
Television channel: Sky Sports 2
Warrington have centre Ryan Atkins back after missing the defeat at St Helens with a hamstring injury, while second rower George King is set to make his first appearance of the season after recovering from a similar injury.
Hull will switch Danny Washbrook to hooker in the absence of Danny Houghton, who picked up a calf injury in the win at Wigan, while Steve Michaels and Jake Connor continue to deputise for Fetuli Talanoa (concussion) and Carlos Tuimavave (ankle). Prop Liam Watts is back from suspension and there are also places in coach Lee Radford's 19-man squad for youngsters Jez Litten, who has yet to play in Super League, Jansin Turgut and Brad Fash.
Last season: Warrington 12 Hull 19, Hull 26 Warrington 24.
Last six league matches: Warrington L L L L L L Hull W L W W W W.
Top try scorers: Tom Lineham (Warrington) 4; Albert Kelly (Hull) 7.
Top goal scorers: Declan Patton (Warrington) 5; Marc Sneyd (Hull) 30.
Referee: J Smith.