Good article by 247 about the drastic combine difference in testing from high school to NFL for many top prospects. A lot of prospects saw increased muscle gain while also drastically changing their numbers for the better in key testing areas.
https://247sports.com/LongFormArticle/Combine-Comparison-NFL-vs-high-school-results-130024262/
Tyler Turner is a contributor to The Sports Cast. Tyler covers all things college football: coaching searches, recruiting, etc. I also cover College basketball, Boxing, Tennis, Golf, and NFL.