Referee appointed The currently appointed referee for Coventry City's Championship game at Portsmouth on Tuesday night is Dean Whitestone from Northamptonshire. Dean started refereeing in Northampton in 1992 and it was his father who got was a class one referee who got him interested. He progressed through the United Counties League, The Southern League, The Conference and onto the Football League as a referee in 2005/2006. He has had 31 games this season including City's 1-0 win over Middlesbrough and has shown 82 yellow cards and eight red. This will be his 12th Championship game of the season. Previous City games he has been in charge of are: the 1-1 draw against Blackpool on January 30th 2010, the 2-1 win at Northampton Town in a Jackson Grundy Cup game in July 2009, the 2-1 win at Charlton on December 9th 2008, the 1-0 home win over QPR on September 20th 2008, the 1-1 home draw with Southend on December 30th 2006. The assistants are Chris Powell from Dorset and Steve Rubery from Essex and the Fourth Official is Tony Mason from Kent .