 He played in the 2011 Super League Grand Final defeat by the Leeds Rhinos at Old Trafford.In 2014, Louie made his 100th appearance for St Helens in their Challenge Cup fixture against Leeds.St Helens reached the 2014 Super League Grand Final, and McCarthy-Scarsbrook was selected to play at in their 14-6 victory over the Wigan Warriors at Old Trafford.