Description:Rayo Vallecano have made a mockery of their financial woes and played some of the best football in La Liga this season to climb to sixth and can test their progress when they take on wealthy city rivals Real Madrid at the Bernabeu on Sunday (February 17). A thoroughly deserved 2-1 win at home to second-placed Atletico Madrid last weekend prompted talk of a realistic chance of a place in Europe next term and enhanced Rayo's reputation as one of Spain's "giant killers".(0:21)