Originally Posted by Povl Carstensen
I think now you are doing the speculating, but of course you are free to do so. It has been discussed plenty allready.
On my first comment about Ron's posts - he has never established that Federer uses actual retail frames, nor that they've done a side by side dissection. I doubt it would interest him in the slightest. As I said, the frames show up from Wilson and they spec them. Aside from that who knows...
As for my comment: "From the moment Wilson started marketing him as using the BLX they were effectively saying otherwise. He was using the K90 mould which was/is not exactly the same as the BLX they said he was using."
This is the truth. Federer's BLX frame did not have the same mould as the retail frames. You can see in photos in the famous thread that the string hole groove is not quite the same. Ergo, however similar it may have been otherwise, it is not speculation that he was using a different frame than the retail model of the BLX.