Primarily known as a hooker, Jon has also performed at half-back, second row and loose forward since beginning his career with Wigan, who he helped to victory over St Helens in the 1997 Premiership Final.
Following a brief stay in the capital, Jon returned north during 2001 to begin a successful ten year association with Warrington, collecting a Challenge Cup Winners Medal in 2010.
Clarke helped Warrington to lift the League Leaders Shield in 2011, before bringing his vast experience to the Stobart Stadium Halton.
Having represented Great Britain at Academy and Senior level, Jon has also represented the 'Northern Union' against the 'All Golds.'
Appointed captain for the 2012 season, Jon's considerable experience came to the fore as the Vikings recovered strongly from a poor start to the campaign.
Clarke's sponsors for the 2013 campaign are Polyblend UK Limited
Previous Clubs: Wigan Warriors, London Broncos, Warrington Wolves
Widnes debut: Wakefield (H) on 3rd February 2012
Career record as at 31st October 2012: 342 apps; 69 tries; 2 goals; 280 points