I have wondered this and tried to figure it out before, but the crowd on this thread is likely to be able to answer my questions so here goes:
What is a Speed Rating?
Who decides what number to assign?
Is it just for that specific performance, as opposed to the athlete?
Is there an age limit - i.e., I am well into middle age, so can I or my next performance get Speed Rated?
What is Kipchoge's Speed Rating for the Sub-2 and what is it for the Berlin record (or does he not qualify)?
What is the best Speed Rating ever and is it from a World Record Performance?
I never have know what the deal is, so somebody help me out! Thanks in advance, knowledgeable enthusiasts......