85 hit him in the heart area. We’ve seen this happen before, but not to this length. The heart may be between beats and the hit at that exact moment stops them cold.
Or it could be something else like a blood clot.
All we really know is he had to have CPR right there on the field. We know nothing more at the moment.
I have seen players carted off the field. I have never seen the tears and the ‘knowing’ looks from the commentators. THIS is bad.