This is Karl's second season as a National List Referee referee.
His started refereeing in Junior football in Salford and progressed via amateur football in Wigan to the contributory league.
He was a member of PGMO's refereeing team for the Dallas Cup 2008.
Last Season he took the Millers home fixture against Notts County at Millmoor with the game ending in a 1-1 draw.
This season Karl has taken charge of just 12 games issuing 27 yellows but just one red card.
Running the lines will be Paul Graham also form Gtr Manchester along with Paul Simpson from Co. Durham.
The Fourth Official is Michael Naylor (S. Yorkshire)