Got a total TKD vibe from this. Nice turning kick at the end of round 1, but he probably should have kept at the guy until he was banjaxed, maybe a couple of leg shots or kick to the nads, because as we seen in the second video these fuckheads don't know when to quit. The TKD guy was obviously very reluctant to fight, you could see it.
I'm only a short guy, so sparing guys with legs like his are fucking a pain. Reach is hard to beat. I need to get back in training. On my turning kicks I'd usually pull my toes back and hit with the ball of my foot (the underneath part) its strong bone with padding and I've broken red bricks with it. It can be harder with shoes on but some of the newer TKD places use pads for semi-contact and that encourages the use the instep similar to Muay Thai. My favourite quick kick is a front kick to the lower stomach/nads area. Hard to defend, very quick or even a kick to the shins can be killer unless they are conditioned.