Is this way too throw leading uppercuts?

[SugarBoxing]

I'm just trying to grasp the mechanics of this uppercut is the russian fighter stepping as he throws the uppercut?

Leading uppercut is a very andvanced techqniue, it is physically demanding. Personally, at this moment, I do not fully understand it yet. I suggets mastering basic punches first.

Check our recent stuff on uppercuts: http://www.sugarboxing.com/the-scien...boo-part-v/#C3

Read JD book, he explains more there. Actually, he did not believe in lead uppercuts at that time. Nowadays, guys like Tyson, Mayweather, Canelo, Ruddock, etc prove he was wrong.