It’s a head-to-head contest made in heaven: Zidane vs Beckham vs Raul. With the possibility of Ronaldo, Rivaldo and Ronaldinho joining in. The three footballers will be used by the cities of Paris, London and Madrid to front their bids for the 2012 Olympics. A brief on the bids:THE CITIES: Paris, London, Moscow, New York, Madrid and Leipzig (Germany); of them, the first three have staged Olympics. Toronto and either Rio or Sao Paolo are expected to join inTHE STARS: London will trot out Beckham — born in the Leytonstone suburb — along with Steven Redgrave, winner of five Olympic golds for rowing, and Seb Coe. Paris will trot out Zidane and Olympic judo legend David Douillet; tennis stars could also be roped in. Madrid boasts Raul, golfer Seve Ballesteros, former Tour de France champion Miguel Indurain and singer Placido DomingoTHE BETTING: London is the favourites so far, the odds 7-4; Paris is 5-2, Toronto 9-2, Madrid 6-1, NYC 8-1THE D-DAY: The IOC will name the city hosts in Singapore on 6 July 2005