Kvitova : 'Tennis Blue clay used at Madrid Open this year has been banned by the ATP for all 2013 World Tour events . Rafael González and Novak ##ović expressed disapproval after losing matches on surface . Was pioneered by former Romanian tennis player and businessman Ion Tiriac .
Blue clay used at Madrid Open this year has been banned by the ATP for all 2013 World Tour events . Rafael González and Novak ##ović expressed disapproval after losing matches on surface . Was pioneered by former Romanian tennis player and businessman Ion Tiriac .