No more blue clay courts allowed under ATP
Blue Clay For Madrid; Sony Ericsson Open Signs Up MasterCard: This Week in Tennis Business with Justin Cohen - World Tennis Magazine
Roger Federer, Rafael Nadal Oppose Madrid's Blue Clay: Slap at Tennis Tradition? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
What is the difference between blue clay and red? | Talk Tennis
Madrid Open (tennis) - Wikipedia
Federer-backed Blue clay is here to stay in Madrid - Sport360 News
Even Four Years Later, Bad Feelings Linger Over the Blue Clay in Madrid - The New York Times
T365 Recall: When the Madrid Open's blue 'Smurf' clay courts irked the tennis community - Tennis365
Smurf jokes and a billionaire's dream: Where did Madrid go wrong? | CNN
Blue clay banned as Nadal, Djokovic get their way
Djokovic loses; won't return to Madrid's blue clay - The San Diego Union-Tribune
Madrid Memories 2012: Serena's brilliance in blue
The Volley: Blue clay, best-of-three—can Madrid's Cradle of Innovation lead to more changes in tennis?
Madrid's blue clay given red card by ATP | CNN
Madrid banned from using blue clay courts | Daily Mail Online
T365 Recall: When Madrid's blue 'Smurf' clay courts ruffled tennis' feathers - Tennis365
Nadal threatens to boycott blue clay after shock Madrid defeat | CNN
The Story of Blue Clay | Madrid 2012 | When clay turned BLUE 💙 Presenting the story of the infamous blue clay in Madrid 👀 | By Tennis TV | Facebook
Mutua Madrid Open gives up blue clay - Wanted in Europe
Roger Federer, Rafael Nadal and the true meaning of the blue clay - oregonlive.com
Flashback: Roger Federer's Triumph On Madrid's Blue Clay | ATP Tour | Tennis
Is blue the new red? Madrid's clay court revolution | CNN
Roger Federer wins Madrid and takes world #2 ranking
A completely different game': Rafael Nadal rails against Madrid Open's blue clay
