A single man, (there you are Mandy) Karl is a sales representative by trade.
He started refereeing aged 15 in Junior football in Salford.
Last season was Karl's first as a National List Referee having spent three seasons as a panel referee and National List assistant referee.
karl took charge of the Millers 1-1 home draw with Notts County last season
This season in 11 games he has shown 25 yellow cards and just 1 red.
Running the lines will be Ken Haycock (W. Yorkshire) along with Bob Robert (LLancashire)
The Fourth Official will be Dave McCallum (Tyne & Wear)