Everyone talks about the IAAF protecting certain athletes that are "too big to fail." If a big shot gets popped, it's a red mark on all of track. So if they were concerned about image, Gatlin would have been barred one way or another from competing.
If Nike is calling all the shots, why reuse gatlin? I can't think of a more depised man on the track. Nike could have just "promoted" some 19 year old to the good dope, right?
He is there cause he got the goodshit and nike's blessing.