Super League Round Four: Team news, stats, predictions and odds for Castleford Tigers, Leeds Rhinos, Hull FC, Wakefield Trinity and Huddersfield Giants

Following last week's thumping win over Leeds Rhinos, early Super League leaders Castleford Tigers head to Widnes in round four - in another intriguing set of Super League fixtures across the board.
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To help guide you through the action, Dave Craven provides The Yorkshire Post's indispensable guide on where each game may be won and lost.