[5] Riley played in the 2010 Challenge Cup Final victory over the Leeds Rhinos at Wembley Stadium.

[5][6] Riley joined Harlequins RL in May 2011 after agreeing an initial one-month loan deal, he made his début on the right wing against Castleford Tigers in a disappointing 56-24 loss, in which he scored two tries.

Riley later returned to Warrington and made the trip to Australia with the team for their pre-season games and will be included in a squad to play Russell Crowe's South Sydney Rabbitohs at Redfern Oval on Saturday, 28 January 2012.

[7] Riley played in the 2012 Challenge Cup Final victory over the Leeds Rhinos at Wembley Stadium.

[8][9][10][11] Riley played in the 2012 Super League Grand Final defeat by the Leeds Rhinos at Old Trafford.