John "Darkie" Smith trained a boxer who scored victories over six what?
Darkie Smith:  These fighters include European Heavyweight Champion Zeljko Mavrovic and future world champion Chris Eubank. Chris Eubank: Christopher Livingstone Eubanks (born 8 August 1966), known as Chris Eubank, is a British former professional boxer who competed from 1985 to 1998.
i don't know