Anatoliy Pavlovych Bondarchuk is a retired Ukrainian hammer thrower who competed for the Soviet Union. An Olympic gold medallist, he is also regarded as one of the most accomplished hammer throw coaches of all time. He is the author of a two-volume book Transfer of Training, which was translated from Russian to English by Michael Yessis.

Dylan Armstrong is a Canadian athletics coach and retired competitive shot putter. He is the 2008 Olympic bronze medalist, a two-time World Athletics Championships medalist, a two-time Pan American Games champion, and the 2010 Commonwealth Games champion in that discipline. He was awarded his Olympic bronze medal in 2015, seven years after the event, following the doping disqualification of competitor Andrei Mikhnevich.