York Knights captain Chris Clarkson to retire at end of 2023 season September 16, 2023 News by Leave a Comment on York Knights captain Chris Clarkson to retire at end of 2023 season York Knights captain Chris Clarkson will retire at the end of the 2023 season after a 14-year career including spells at Leeds Rhinos, Castleford Tigers, Widnes Vikings and Hull KR.