Bill James is a baseball legend.
The man who coined the term "sabermetrics" led a revolution in thinking that resonates to this day. It's impossible to imagine 21st century baseball analysis without the path he forged with his ground-breaking Baseball Abstracts.
That's how we think of him today anyway. But back in the 1970s, James was just another baseball fan living in the heartland with a Sporting News subscription.
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To celebrate James' 67th birthday, let's take a look back at some of the letters to the editor he wrote to Sporting News.