Castleford move seven points clear at the top of Super League with a victory at Yorkshire rivals Leeds Rhinos.
Hull FC come back from an 18-10 deficit against Wakefield to earn a fourth successive win and go second in Super League.
Matty Smith scores a late drop goal as St Helens come back from 16 points down with seven minutes left to beat Salford Red Devils.
A drop goal from George Williams ensures Wigan Warriors secure a draw at Huddersfield Giants in Super League.
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Widnes Vikings' wing Corey Thompson scores a "great" try in the 36-10 victory over Leigh that sends the Centurions bottom of Super League.
Luke Robinson and Kevin Brown have had repeated concussions, but both tell Radio 5 live the game is getting to grips with the issue.
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