So Satchel Paige, who started pitching in the 1930s, pitched three innings at Kansas City against the Boston Red Sox, in 1965 !
He walked none, gave up no runs in three innings, and only one hit - a double by Carl Yastzemski:
https://www.youtube.com/watch?v=jobmPs33fO8
He is listed as born on July 7, 1906 in Mobile, Alabama. So he was officially 59 years old.
If there is general progress in baseball talent over time, if Walter Johnson's fastball would not be wrinkle on some of those throwing today, if our players today are so much better by definition, why couldn't the Red Sox light up a guy one year younger than I am now like a Christmas tree?
Why, when in 1978 after not having thrown a pitch since his retirement in 1966, Sandy Koufax pitched batting practice to the Dodgers so they could prepare for facing the fire-throwing left Ron Guidry in the World Series, did the Dodgers' management have to go out to the mound and ask Sandy to please stop and leave the mound because he was striking everyone out and demoralizing the whole Dodgers lineup before the game?
We are supposed to believe that the wild swingers we have today at the plate would have had no trouble against wizards like Warren Spahn, or hurlers like Bob Feller, and that Ty Cobb, or for that matter Willie Mays would be blown away by the fastballers throwing in the late innings now (with their 100+ fastballs aided at least mathematically by the inflated radar gun measurements used today, making everyone faster than Nolan Ryan), with no chance.
I, instead, would hold that the human body remains paleolithic, and is the same body it has always been for 100,000 years, maybe 200,000. That if it is better nourished and better trained it is likely to perform better, but then how do we explain the talent from the Dominican Republic, where health conditions, diet - whether there is one or not, let alone nutrituional quality and calorie and protein intake - and living conditions and training equipment are a joke compared to what is available in any suburban New Jersey high school program?
What is the REASON for the quality improvement over time that is supposed to have happened:
the human body has changed?
diet is better?
flying in airplanes is better for you than traveling in trains?
better gym equipment means baseball players today could have won the Trojan War against Achilles and Agamemon? I am sure those guys did not know anything about exercise back then, the Spartans and Romans either.
watching TV in the offseason is better for you than working in a local restaurant or sports shop?
The only one that is very convincing is that diet is better today than in the past. But my example of the DR suggests that this may not be decisive: if it were, why were the Negro League players as good as MLB players, as their offseason games continually showed, or why at least did the Negro League players that joined MLB not tank for the first season or two until their diet and training improved?
As to training, maybe. We do know more and there is more seriousness in routine, but there are also I think more season ending injuries than there once were - do the trainers know what they are doing?
So, I remain unconvinced that we can assume anything about the quality of play other than that it has remained consistent on average and at the top levels since the point when Major League Baseball really reached Major League quality - maybe 1901, maybe a little later, allowing of course for the exclusion of the MLB-level talented players who could not play due to racism. That remains a legitimate cause for an asterisk and I continue to think it is the real reason there are no more .400 hitters or 30 game winners, etc.