Hull KR pick Dobson as time runs out for Mason

(GETTY IMAGES)

Hull KR have performed a complete about-turn on the eve of today's Humberside derby by deregistering Willie Mason and picking Michael Dobson. Dobson was deregistered with an ankle injury while Mason waited for a Tongan passport to make him exempt from the overseas quota.

It still has not arrived and Mason has been spotted talking to the wealthy French rugby union club, Toulon. The RFL's board of directors could reregister him, but realistically his time with Rovers is over after six games.

The Hull KR full-back, Ben Cockayne, has become the latest player to fall foul of scrutiny of his web-posting. Rovers have launched an investigation into reports that the player posted a racist and abusive remark about a taxi driver on his Facebook site. The Rugby League, which has an energetic Tackle Racism programme, is also aware of the matter. Cockayne is in Rovers' 19-man squad for today's derby against Hull.

All the signs are that Martin Gleeson will come straight in for his Hull debut in his customary position of right centre.

Humberside is the starting point for a traditional Good Friday of derbies or near-derbies. Wigan's Michael Maguire recalls Darrell Goulding against St Helens, who are without the recent incumbent at stand-off, Lee Gaskell, with a fractured ankle.

Not-quite neighbours, but frequently thrown together on these occasions, Harlequins and the Catalan Dragons both have grounds for optimism at the Stoop. Quins pulled out of their recent slump with a creditable draw with Castleford last time out and they have Lee Mitchell making his debut on loan from Warrington. The Catalans are looking for their fourth victory in a row and they have the hugely influential Thomas Bosc ready to make his first appearance of the season.

Matt King is in line to return for Warrington after knee surgery at Salford, who have confirmed that Shaun McRae will not coach them next season.

David Fa'alogo is back in Super League leaders Huddersfield's squad at Crusaders.

The one evening kick-off sees genuine local rivalry as Wakefield make the short trip to Castleford. Wakefield have Aaron Murphy and Glenn Morrison both fit to return. Castleford's Stuart Jones comes back after a shoulder injury.