it was a matter of time before Sam threw that far. he threw 230 in High School for Christ-sake. Shame on you.[/quote]
Well, a high school discus weighs about 1.6 kg while the collegiate/pro discus is 2 kg.
Some sources say that it equates to about 20 feet in difference.
The throwing implements in menâ€™s college field events are heavier weights that those in high school. As a result, we can only provide rough comparisons in this database. Use the following conversion to adjust for the weight and height differentials. They are provide only as estimates, actually performance will vary based on an athleteâ€™s physical makeup (i.e. height, strength). These are based on antidotal experience of coaches and athletes. To our knowledge, no statistically based conversion methods are available.
Menâ€™s discus: subtract 20 feet from your high school discus performance
Men's Hammer: subtract 40 feet from your 12 lb hammer performance
Menâ€™s Javelin: No conversion needed.
Menâ€™s Shot: subtract 5 to 8 feet from your high school shot performance"
So Mattis could have been throwing equivalent to 210-ft at the end of HS if he used the collegiate weight. That is still better than his PB going into the 2016 season (205-00 from June 2015). I agree that it was only going to be a matter to time before Mattis threw that far. I hope he can replicate it this season.