Tanya Arnold presents the latest highlights from the Betfred Super League.It's round four and champions Leeds play their first game of the season at Headingley. Their famous home is being redeveloped this year, but stages its first Super League match of 2018 when Catalans Dragons are the visitors. Wigan are also back on home soil after their tour of New South Wales. The Warriors have their first fixture of the year at the DW Stadium, with Widnes Vikings in opposition. St Helens meet Salford in a repeat of their dramatic match in 2017. That night, Saints scored three tries and a drop goal in the last seven minutes to complete a sensational victory by just a single point. Last year's League leaders Castleford travel to face newly promoted Hull KR, Wakefield look for a second home win of the season when they meet Huddersfield, and Hull FC are at home to Warrington.