i'd say most top 50-100 guys can run a 5k in 18 or under, would be surprised if they couldnt.
i can run a 20:00 on a hungover morning without even training so YES these guys can easy IMO
once new a guy that never practiced only should up for races, usually late, always smoking cigs and could run 15 flat...with jean shorts
looking at someone means nothing
kfactor 6.1 16x18 (48lb) cracked blx 6.1 18x20(50lb) 2 ProstaffTour90 (55lb)or anything in my trunk.Fed,Samp,Gasquet,santoro,dimitrov,grosjean,mcenroe