IT’S a much-changed Castleford Tigers outfit that will go up against Warrington Wolves this weekend. Semi Valemei and Ashton Golding have both torn their hamstrings, whilst Mikaele Ravalawa has been sent to Doncaster on a month’s loan. Fletcher Rooney, George Hirst, Louis Senior and Tylor Sharpe come in, with the latter in contention to make his Castleford debut. There could also be a debutant for Warrington, with youngster Charlie McKler called up to the squad alongside veteran Sam Powell. James Bentley, Ben Hartill and Kelepi Tanginoa drop out after last week’s 28-12 defeat to Leigh Leopards.