I know we look at the old days of 300 innings and pitching every four days, but pitchers weren't going 100% for those outings on every pitch like they are today. They would rather have 100% of a pitcher for 80-90 pitches every five days, than 90% of them for 120 pitches ever four days. They also have relievers they are pushing out with stuff that puts everyone to shame from the good old days. It's a different game, with different physical asks. If we were still asking for the average 85mph fastball, I am sure these guys could handle it just as much as the old days. With the emphasis on speed, spin, and velocity, versus accuracy and endurance, we can't expect the same things.