Why does Roger Federer practice on hard courts? (PIC INSIDE) - Tennis World

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Why does Roger Federer practice on hard courts? (PIC INSIDE)
Tennis World
Roger Federer keeps training in Switzerland on... hard courts! The Swiss player, who will come back to compete on Wednesday June 14 in the ATP 250 Stuttgart event, is training on hard because in his country there are not many grass-courts, and so he ...