i'd be interested to see his 06-08 PRs and if they suggest he was in sub-4 shape, or they are equivalent to sub-4 performances by various tables.
. As recently as 2008, he was still a 4:01 guy. Sort of reminded many people of Ryan Hall - fast in HS but maybe he's really a long distance guy.
He finally breaks 4:00 for first time in 2009. Now 4 years later, he's a 3:50 indoor miler.