Yep exactly! as commenters said there is no rules in street fights. Hopefully Author picks this up and do a comparison more between a martial arts fight with rules in the ring, VS street fights with no rules. and Maria would teach more to Ji Tae about how to deal in street fights THEN in the future bring those ideas in the ring.
but this is a bit too beyond Ji tae's league. this playboy guy is a top A rank right?! I feel like Ji tae should've started with one of those assholes that Cha so wol hangs out with. that jang guy. they're both on the same level in the fight class rankings. both lost in the first round and didnt fight to rank up their place after that.