Im not completly sure but didnt Knott originally want to play baseball after HS. He throws like 88-92 off the mound. Also ive seen the records at Waukee its true about his lifting stats.
Here is a link to world powerlifting records: Men's 198 Pound/90 Kg Weight Class Top 20 | Powerlifting Watch
I'm not completely dismissing this claim about Knott but a lift of 705 would put him just outside the top 20 for world records for 198 lb. Weight class (which I believe was around his weight in hs). not to mention, nearly all the record holders were in their mid-20s to early 40s.