Pat Richards was the star of the show as Wigan cemented their spot at the top of the Super League table with an 18-4 win over Salford on Sunday. Their victory - and Warrington' 36-16 defeat at Hull KR - put Wigan four points clear at the top of the table and there was no doubt as to who was the standout performer. Former Wests Tigers star Richards ran in two tries and kicked three goals as the league pace setters made light work of the Reds. But while the Warriors were marching to their tenth victory from 11 Super League games Hull KR put a huge dent in high-flying Warrington's season. Peter Fox scored two of the Robins' six tries with Michael Dobson kicking six goals as the Wolves - on the back of three games in eight days - struggled to cope with the home side. Former Gold Coast Titans fullback Richie Mathers and former Melbourne Storm star Matt King crossed for the Wolves but it was not enough. While Wigan went clear at the top reigning champions Leeds' return to top form continued with a comfortable 46-30 win over Hull FC. The reigning Super League champions' victory against Catalans Dragons last week was their first in five after a dismal start to the season from the Rhinos. But that inconsistency looked like ancient history as Brian McClennan's side made light work of the Black and Whites at Headingley. Keith Senior and Ryan Hall both scored twice as the Rhinos ran in eight tries and despite rookie Hull wing Tom Briscoe's one-man battle to keep his side in touch the Rhinos were too strong. Briscoe crossed four times but tries from former New Zealand Warriors second-row Ali Lauitiiti, Rob Burrow, Jamie Jones-Buchanan and Danny McGuire saw Leeds home comfortably. Elsewhere, former Wales rugby union international Gareth Thomas was among the scorers as Crusaders beat Wakefield Wildcats 20-10. St Helens' surge towards the top of Super League continued as they ran in five tries against rock-bottom Harlequins in a 32-24 victory at the Stoop. Ben Jones-Bishop scored the first of four tries for Quins but Andrew Dixon ensured the scores were level at 6-6 at the break. Kyle Eastmond fired Saints ahead after the interval and seconds later Dixon crossed to seemingly secure the win for Mick Potter's men Quins debutant Kevin Penny and ex-Manly second row Luke Williamson levelled it before Roby crossed twice to seal the win rendering a Tony Clubb try a mere consolation. Wing Rikki Sheriffe scored a hat-trick for Bradford as they piled more misery on Catalans Dragons with a 36-14 win in France. Bradford dominated the first half with ex-Cronulla half-back Brett Kearney one of three try scorers for the Bulls. The Dragons fought back well after the interval and former Melbourne centre Steven Bell and Greg Mounis crossing for tries. But Steve Menzies got his name on the scoresheet and Sheriffe completed his treble. David Hodgson scored three tries for Huddersfield as they comfortably beat Castleford 24-0 at the Galpharm Stadium. Jamahl Lolesi was the Giants' other try scorer while ex-Wests full-back Brett Hodgson kicked four goals to sink the Tigers. 