The post is a research into weather Gary Cooper, who plays New York Yankee legend Lou Gehrig, actually did the batting and fielding in the movie left handed, like Gehrig.
Cooper was a natural right hander, and many believe that he did all the baseball things, batting, and throwing, right, and then the film was flipped to make it look like he was doing everything as a lefty, like Gehrig,
It's a somewhat lengthy piece, but worth the read.
If you watch the movie, or any other baseball movie made in the 1940s or 1950s, and complain about the baseball action, then you won't enjoy the movie.
The story of Lou Gehrig and his love of his wife, Elanor Twitchell Gehrig...is the movie.
Here's the great scene of Cooper giving the famous "...luckiest man..." speech given by Gehrig at Yankee Stadium.
To me, Pride of the Yankees is one of the finest baseball movies ever made.
When you watch it, enjoy the story, understand the time, and love it for being what it is, a movie about the life and times of the greatest first baseman in baseball history, Henry Louis Gehrig.