Ironically for me the moment that stood out the most was not the knock out, but when they tangled together earlier in the round.
Even though he (Pico) is a good wrestler, it looked like he had no answers for the knee strikes in the clinch. This is something i tend to see a lot from guy's who get their primary striking instruction from guys who's day jobs are as a boxing coaches. People do what they know and they'll tend to prepare them in manners that are more boxing specific that might elide other factors. It's a weakness i've observed even in really good fighters of similar background/training camps, like Tyron Woodley. People look at the fact that he is a good wrestler and think 'okay, its bad to get in close', but all three of the guys who beat him - Jake Shields, Nate Marquartd, and Rory MacDonald - did it by getting up close and personal with him. (Ironically, it is that very fear in the first place that leads to people stopping themselves short and hanging out at an optimal distance for twood to crack them with that right, the distance he is most comfortable with and accustomed too.)
To be honest, the extensiveness of clinch fighting is really something that's MMA specific; not even muay thai really touches upon it to the same scope. It's something that you as a fighter, or as a coach preparing a fighter, needs to consciously emphasize in preparation; you can't just unconsciously lift the same training balances from a coach who is preparing someone for an other combat sport; even ones closely related to your use-case, you will find yourself in certain situations a lot more often in one than the other.
