Actually it could be said it went the exact opposite. I'm not stating for certain that Rubio quit, but to me he wasn't THAT hurt, and he wasn't disappointed to end the fight that early and go home. To me he looked like he didn't want it, that he didn't care and think he could do anything. Rubio has taken worst beatings in his life, he couldn't be stopped by an unclean punch. Sorta like some Tyson opponents, not even trying to get up.
It was good he didn't continue because he was close to being knocked out cold, and yes, it was coming Gennadyevich still hasn't been tested