I don’t know of any lucher owners who would be able to pick the best out of a hundred let alone one in a thousand.
As to track proven, well one must consider it in context, a greyhound that is bred from the best of the best that completes a racing career during which it must be able to withstand pressure through it joints that would snap the wrists of a lesser athlete. To my mind this athlete is worth a little closer scrutiny.
When cornering the bones/wrist joints sustain pressure of 500psi or 20,000 newtons per square cm, in simple terms the wrist and lower limb structures withstand up