850 was his second. he opened at 830. 875 was doable, he just went forward with it. I think it will fall the next meet he does.
I got the opportunity to squat in training with him about 3 weeks out from this meet--he was moving 830 ridiculously fast--the squats from the Pro/Am were very very slow; I think he was having an off day. I never saw him shake like he did in that video.
Look for him to do 870+ very soon. And watch out for the boy to squat 900+.