Walter Johnson was a freak. However, tonight’s “soft tossing lefty” averages 3 miles per hour more than the “hardest thrower on earth”. That’s no knock on Johnson, he really was a freak, it’s just a different game. The mound is 10” down from a max height of 15”, and the strike zone is smaller. https://bosoxinjection.com/2013/12/13/pitching-mound-history/