By Chris Barnett The final day of the jumps season still has one big question to answer as three trainers can still finish at the top of the tree. Willie Mullins, Dan Skelton and reigning champion Paul Nicholls all go into Saturday at Sandown with chances of becoming champion trainer where we hope to see Jonbon taking on El Fabiolo in the Grade 1 Celebration Chase. City AM Racing editor Bill Esdaile previews the best of this weekend’s racing action, with Wally Pyrah discussing Sunday’s tremendous Champions Day meeting in Hong Kong. Hosted by Chris Barnett. The Punter‘The Punter’ has been City …