August 31, 1909 – A. J. Reach Co. patented the cork-centered baseball. Previously the balls had a hard rubber core to them. It sounds harmless enough, after all the core is buried under a leather cover and inner bindings. The stats tell a different story though.
According to ThisDayinBaseball.com the number of .300 hitters jumped from eight in 1910 to 27 a season later in the American League. The league’s earned run average will go from 2.53 to 3.34. We have heard about the corked bat, but the corked ball may have had an even bigger impact in the game. The modern ball has a core composed of cork and rubber.
To find more great daily sports history make sure to check out the Sports Jersey Dispatch and Pigskin Dispatch.
More From Sports History Network

Curly Lambeau’s Last (Almost) Hurrah! Coaching the Chicago Cardinals
In 1950, the Chicago Cardinals faced a challenging coaching predicament. After Jimmy Conzelman retired

Sports History On This Day: July 17
July 17, 1941 – All good things must come to an end. That was truly the

Sports History On This Day: July 16
July 16, 1936 – It is hard to fathom in any era of baseball, but

Sports History On This Day: July 15
July 15, 1876 – By George I think he’s got it! Almost 100 years to the

Sports History On This Day: July 14
July 14, 1914 – This is truly a great story of overcoming much in a

Spies on the Sidelines: How Much of an Impact Does Spying Have in the NFL?
While the phrase “three-letter agency” is a euphemism for American spook organizations such as

Sports History On This Day: July 13
July 13, 1930 – The first-ever football (soccer) World Cup competition begins in Uruguay. When

Sports History On This Day: July 12
July 12, 1931 – Crowd control or crowd in control? It was an odd occurrence