He played as a centre for the Wigan Warriors, and captained both the Huddersfield Giants and the Widnes Vikings in the Super League.

[3][4] Born in St Helens, Brown played junior rugby for several teams, including Thatto Heath Crusaders, Haydock Warriors, Pilkington Recs and Blackbrook.

He had originally been included in the stand-by squad, but got his chance following the failure of Hull centre Kirk Yeaman to recover from a shoulder injury.

Wigan coach Stuart Raper commented: "I am delighted Kevin has re-signed as he is a big part of my future plans.

Brown became a first team regular during the 2004's Super League IX, playing almost every game until he fractured his fibula (leg bone) in a match against the Wakefield Trinity Wildcats.

[9] Despite injury and shaky form,[citation needed] he signed a new deal in July 2005 keeping him at the Wigan Warriors until the end of the 2007's Super League XII.

On 17 October 2020, he played in the 2020 Challenge Cup Final defeat for Salford against Leeds at Wembley Stadium.

[25] He retained his place for the 36–6 quarter final victory over Papua New Guinea, but was substituted at half time after suffering a concussion.