Has anyone seen this through the Wilson website? It appears highly factual and credible. I'm astounded by how low these pro tensions are. Can Fed possibly be at 21/19.5 kg or 46/43 lbs??? Davidyenko at 17/16 kg? Verdasco at 23/21. There are a lot of guys listed at 60, 62, 68, 70 etc. which makes the low tensions look credible.