Gerard Tsobanian, managing director of the Madrid tournament, said: “Working with Viagogo means we can offer tennis fans a first class service from a secondary ticketing partner. The service will enable fans to trade tickets they can no longer use and give other tennis fans new opportunities to purchase tickets that are sold out at the box office.”   Edward Parkinson, director of Viagogo UK, said; “The Mutua Madrid Open 2012 has become one of the most talked about events in the tennis calendar. We are delighted to be working with the organisers to enable fans to trade tickets in a secure environment for this prestigious tournament.”