He will be assisted by Matthew Wilkes and Michael McDonough. The Fourth Official is Lee Collins.
Mark Halsey's first game of this season was Cardiff's 0 - 0 draw at Brighton. If his last game in charge of the Bluebirds this campaign ends the same way at Watford I don't there'll be many City fans unhappy with that outcome.
At Christmas he was in charge of City 1 - 0 Millwall.
Halsey has a long history and we can find him in charge of City games back as far as 1997. That was a Football League Trophy defeat at home to Millwall but soon after in early 1998 he was in charge of Cardiff 7 - 1 Doncaster.
He has overcome a cancerous tumour in his throat and is respected as one of the countries top referees.
This season in 26 games he's issued 47 yellow cards and 3 red.