Originally Posted by 8nfinity
By the 1st time, drak means that he caught Fed not positioning the racket in the up direction. It's harder to tell on the K Factor 90 since its symmetrical, but you can tell by his "W" stencil - the W ends are facing down, indicating that he didn't position it the way he does 99.9999% of the time.
Amazing find Drak!
Indeed - although it could be that the stencil was put on the "wrong" way and that's why he was using that string job in practice...but more than likely just hitting around and got caught in wrong grip etc.