Poor young guy... he's in a lose-lose situation.

Win and you're a dickhead, lose and you got beat up by an old guy.

Tags for this video have been changed from 'sports, boksing, skills' to 'sports, boxing, skills' - edited by bareboards2

Old-guy has some chops. He was swinging with some real power.

Young guy never had a chance anyway, obviously doesn't know how to fight.
I think this is a better example of what you're saying... https://www.youtube.com/watch?v=DOfl9PEmGws

I just want to know why the old man is going so hard in the boxing match? Grudge?

@artician I'm not a boxer, but to me it looked like the old guy was just flailing wildly.

I used to box for exercise. You won't connect every shot if you're throwing punches wildly, and he did not only that but throwing powerful hooks. Looking the movement of his body and his footwork, the guy was probably a boxer of some skill early in his life.
My boxing instructor was 80 years old when I started with him, and even at the age where he would awkwardly shuffle around the outside of the ring, once he was in, I literally could not see his hands, they moved so fucking fast.
I'm thinking once it gets drilled into you, it never really leaves.

The young guy was on his heels and leaning back, that's a sure sign of the untrained. Old guy was pitched forward with his head down like a pro.

that and the trying to throw punches from his hips, but that could have just been panic after getting hit with BOMBS from the old man. I still wanna know, whats the background of this, because you don't go into a friendly sparring match trying to land a knockout, and judging from Old Man's obvious experience he too should know this.

or, the old guy had knuckle dusters in his gloves....

likely