The 25-year-old then had to wait six months as prolonged negotiations meant confirmation of the title eliminator against Radovan dragged on until late October.
Head coach Isaac Peach said the postponement wasn’t easy news to break to his fighter.
“I felt like I was going to tell him someone died, to be honest, it was terrible.
“He’s trained so hard, but such is life. He’ll have a couple of weeks off and then he’ll back in the gym getting ready for the same fight.”
Mikhailovich, who usually trained six days-a-week, would train just three times during his “time off”, before returning to his normal schedule.
Peach said while it was heartbreaking, given how hard Mikhailovich had been training, they had to take it in their stride.
“Straight away, it’s really horrible, but then you’ve just got to regroup and get the same goals in mind, the same fight.
“It’s just boxing, this happens and it’s all part of it. It’s obviously highly frustrating ... but, look, he’s in a world title eliminator.
“If we’ve got to wait a little bit longer, so be it.”
When it takes place, the winner of the fight is in line to earn a shot at unbeaten IBF world title holder Zhanibek Alimkhanuly of Kazakhstan.
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