Live On BBC1: 14:30. There are two games in the last 16 of the Challenge Cup on Saturday including the TV derby between Wakefield and Castleford. Compare odds
Challenge Cup betting Saturday 21 May 2011
Wakefield Wildcats v Castleford Tigers (14:30 BST)
Widnes Vikings v Hull FC (15:00 BST)
Challenge Cup betting Sunday 22 May 2011
Huddersfield Giants v Catalans Dragons (15:00 BST)
St Helens v Featherstone Rovers (15:00 BST)
Bradford Bulls v Wigan Warriors (15:30 BST)