This proposal consists of a new roof in front of the sports building of the campus of the University of Navarre, also projected by AH Asociados. The new building has a tennis court and three paddle courts. For the roof, a metallic structure has been proposed, so that it contributes to the light character of the edifice. The roof has been resolved by using trusses and clearstories, adopting a saw-tooth configuration. The fašade, offset from the structure, emphasises its light building-envelope character, intentionally leaving the roof in the background. The fašade has been executed with a transparent material (polycarbonate) that contributes to the sensation of lightness and, due to its properties, it is suitable for construction purposes. The upper horizontal closing of this envelope is resolved through the use of an in situ sandwich panel. The fašade is interrupted at a height of 3 metres in relation to the court in order to allow the continuous sight of the green spaces.