Has Rafael Nadal‘s friendship with Roger Federer taken a toll ... A few weeks back, they were on cloud nine, seeing Federer and Nadal posing together with bright smiles at the Rafa Nadal ...

Tim Newcomb covers tennis gear/business, stadiums and sneaker tech. Roger Federer has put his signature on a string of Wilson rackets. Now he’s even added his entire design ethos—from technica ...