Yeah it was Trigg. He complimented GSP, then cried when he went back to his corner. You could tell it was a HUGELY humbling experience.
GSP had a similar effect on a bunch of fighters. Once they were in there with him, they realised just how much better he was. Like, several tiers above them in ability.
That has got to suck. Spend fucking YEARS training as hard as you possibly can, dedicating your life to improving your skills, have a bunch of fights, win most of them, work your way to the title... And be forced to accept that this French Canadian motherfucker is better than you will probably ever be.
I think its why so many of GSPs opponents were never quite the same after fighting him. Faced with the seemingly impossible task of improving themselves to get to GSP level, they kind of just gave up.