Federer concernant sa barbe : "J’ai décidé de ne pas me raser durant quelques jours
On verra bien quand mes filles me diront que ça pique"
Shanghai 
Davis Cup: between reforms, criticism and national culture 
When tennis stars change courts: from Noah the singer to Safin the deputy, another match – the battle of reinvention 
As a laboratory for tomorrow’s tennis, does the Next Gen Masters have a future? 
Tennis: the little-known truths about the offseason, between rest, stress and physical survival 