An email said to be from Peng was released on Wednesday by CGTN - the international arm of government-controlled state broadcaster CCTV - but doubts have also been raised over its authenticity. "I've just always felt better when I've had a couple of people working with me. Another set of eyes. It's also good for the player and coach to have a break from each other," the 34-year-old added.Don't forget to follow us onskysports.com/tennisour Twitter account@skysportstennis Please use Chrome browser for a more accessible video player "[The injury was] something you shouldn't be playing golf on, then he went and won the US Open on it, which if you are having to hack out of this rough, and obviously it's one of the tougher walks as well, that's something else.