WOLVES boss Tony Smith has shown visitors Keighley Cougars no mercy by selecting a strong 17-man side to defend their Challenge Cup title at the Halliwell Jones Stadium, kick off 3pm.

Jason Demetriou's Cougars will have a lot to worry about this afternoon, as they face a strong and experienced Warrington Wolves team that includes a healthy number of first team regulars.

After a recent stint in the under 20s, Chris Riley replaces Brett Hodgson at full back as the experienced Australian earns a rest.

There is a Wolves full debut for local youngster Gareth O'Brien, who has impressed boss Tony Smith in the under 20s this year, as he comes in to fill the gap left by the injured Richie Myler.

Wolves: Chris Riley; Rhys Williams, Matty Blythe, Ryan Atkins, Matt King; Lee Briers, Gareth O'Brien; Garreth Carvell, Mickey Higham, Mike Cooper, David Solomona, Simon Grix, Ben Harrison. Subs: Michael Monaghan, Adrian Morley, Paul Wood, Rhys Evans.

Keighley Cougars: Gavin Duffy; Ben Sagar, Danny Lawton, Chris Baines, James Hutchinson; Jason Demetriou, Ryan Smith; Andy Shickell, James Feather, Ryan Benjafield, Will Cartledge, Olly Pursglove, Jamie Shepherd. Subs: Jamaine Wray, Rick Barr, Scott Law, Greg Nicholson.