Harlequins have welcomed former rugby league star Sean Long as an assistant coach for next season.
St Helens were stunned by London Broncos, while Tony Smith's first match in charge of Hull KR ended in late disappointment.
Warrington Wolves hammered Catalans Dragons to move six points clear of their opponents in the Super League table.
David Argyle has fired himself as chairman and CEO after he was accused of making a racist comment towards Swinton Lions player Jose Kenga.
Tuimoala Lolohea scored the only try of the game in testing conditions as Leeds Rhinos moved four points clear of London Broncos.
Former Leeds Rhinos, Warrington Wolves and England coach Tony Smith has been appointed by Hull KR until the end of the season.
Wigan Warriors' social media team were busy on Thursday, announcing six fresh deals as well as two new signings.
Former Australia coach Tim Sheens has left Hull KR after a run of six defeats in seven Super League games left them second from bottom.
Kallum Watkins is looking forward to a new challenge either in the NRL or with another Super League club.
Seven tries from seven different players saw St Helens beat Castleford Tigers and restore their six-point lead at the top of Super League.