1 Sonny Liston, were you bought and did it result in your death
2 Gerald McClelland was there a problem with you before the Benn fight
3 Jim Watt did you deliberately head but O'Grady
4 Evander why big guy why ??
5 George Foreman if you hadn't found God would you have bounced back from the Jimmy Young loss and been champion again in you 20's

Kudos for the Terry Marsh comment.
I think also Hagler explained he knew that Leonard wouldn't give him a rematch or at least he would string it out until Hagler was either too old or rust set in.
Angelo Dundee admitted to slicing Ali's glove against Cooper.
Marciano did deny Mafia involvement but then so did John Gotti