Super League treatment room as Castleford Tigers count up the injuries before Challenge Cup quarter-final

Challenge Cup is where the focus is at this week as eight clubs battle it out to move one step close to a major final. A number of clubs have injury issues but it's Castleford who appear to have the most problems heading into a big weekend.

Here’s a look at those who are either ruled out or doubtful this week.

Callum McLelland (knee), Jacques O’Neill (hamstring), Sosaia Feki (Achilles), Danny Richardson (neck), Ryan Hampshire (hand), George Lawler (Suspended)

Cheyse Blair (hand), Gareth O'Brien (head), Greg Eden (Rib)

George Lawler to miss Hull KR return after receiving lengthy suspension

Arthur Mourgue (ankle), Julian Bousquet (arm), Dean Whare (pec)

Jake Wardle (ankle), Will Pryce (suspension), Oliver Russell (concussion)

Scott Taylor (foot), Joe Cator (Achilles), Cam Scott (ankle) Jamie Shaul (calf)

Carlos Tuimavave (calf), Josh Reynolds (elbow)

Luis Johnson (foot), Albert Vete (calf)

Dean Hadley (calf), Will Dagger (knee)

Tom Holroyd (ankle), Richie Myler (groin), Sam Walters (shoulder), Harry Newman (hamstring)

David Fusitu’a (knee), Corey Johnson (knee) James Bentley (neck)

Harvey Livett (calf), Kallum Watkins (knee), Dan Sarginson (shoulder), Shane Wright (hamstring), James Greenwood (ankle)

Sione Mata'utia (hamstring)

Alex Walmsley (hamstring), Regan Grace (unspecified), Matty Lees (ankle)

Mathieu Jussaume (broken leg)

Latrell Schaumkel (unspecified)

Bill Tupou, Lee Kershaw, Jack Croft (all knee), Lee Gaskell (elbow), Thomas Minns (hand), Tom Lineham (knee)

Tom Johnstone (back), David Fifita (thumb)

Greg Minikin, James Harrison (both knee), Stefan Ratchford (shoulder),

Matty Ashton (calf)

Kaide Ellis (suspension)

Kai Pearce Paul (groin), Iain Thornley (ankle)