Did you hear about the third installment of Once a Runner?
Quenton Cassidy is in his late 40's and is running a restaurant in Boulder. One of the local weekly running programs in the area runs a special top 100 distance runners of all time and lists Ryan Hall #1, with Cassidy registering a distant fifth. Since Quenton has become something of a local legend in the Boulder area since his retirement from running in the mid 80's, the locals go crazy, saying that Quenton could beat Hall if both were in their prime.
Hall being pretty sensitive to public opinion, gets pissed off and pulls some strings to get one of the local race directors to set-up an age-graded race between the two, and the rest, well, you'll have to buy the book.