Basically how many yards does a WR get divided by the number of times he runs a route. This is for a three year time period - Link. Discussion in the link how this may be a better indication than just yards or ypr. Anyway, to cut the story short: #1 - Andre Johnson. It's tough to be a man among boys once you hit the NFL - and then there's AJ. I'm still impressed by a quote from Kubiak after his first season here - something to the effect that he had never seen coverages drawn up for other WRs like they were for AJ.