I can vouch for Michael's sprinting speed. I witnessed him beat the late Bill McChesney in an impromptu standing start 50m dash on July 3, 1978, before a US vs USSR junior dual meet in Donyetsk.
Great anecdote. It reminds me of the first pro Track circuit in the early'70s. Indoor meets. And one of the features was a 40 yard dash matching huge shot putters against whippet-fast women sprinters. My recollection is that they were always close races. World class throwers have to have lots of fast twitch fibers.