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Tommy John
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Pitcher Tommy John of the New York Yankees, wearing jersey number 25, mid-throw on the mound during a 1989 Major League Baseball game, with a blurred crowd in the background.
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Tommy John

American baseball player
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Learn about this topic in these articles:

  • Tommy John surgery explained
    Tommy John surgery
    / Origins

    
surgeon Frank Jobe on pitcher Tommy John, who was playing for the Los Angeles Dodgers. At that time, elbow soreness and subsequent surgery often meant the end of a baseball pitcher’s career. When Jobe examined John’s throwing arm, he noticed that the UCL was simply absent. Because the UCL connects


    Read More

    
surgeon Frank Jobe on pitcher Tommy John, who was playing for the Los Angeles Dodgers. At that time, elbow soreness and subsequent surgery often meant the end of a baseball pitcher’s career. When Jobe examined John’s throwing arm, he noticed that the UCL was simply absent. Because the UCL connects


    Read More