Highlights from the latest round of matches in the Super League as the first part of the 2017 season reaches the halfway stage. Two of the competition's high-flyers, Castleford and Wigan, meet for the second time this year. Their previous meeting was just three weeks ago, and ended in a comfortable win for Castleford, but Wigan have been in great form since, and will be out for revenge against the team who have led the table for much of the season so far. Hull FC meet Warrington for the second time in a month. The two teams contested the Challenge Cup final and the League Leaders Shield last year, and their 22-22 draw in their first meeting this year suggests they are just as equally matched this season. St Helens are at home to Leigh, Salford take on Widnes, Leeds play Huddersfield, and Wakefield are at home to Catalans.