Thomas Edward John Jr. (born May 22 1943 in Terre Haute, Indiana) is a former left-handed pitcher in Major League Baseball whose 288 career victories rank as the 5th highest total among lefthanders in major league history. He is also known for the revolutionary surgery, now named after him, which was performed on a damaged ligament in his pitching arm. Wikipedia
The definitive Wikipedia entry for Tommy John. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Tommy_John
Tommy John's arm injury and subsequent comeback from a revolutionary surgery which took parts of his right arm and placed them in his left, altered the history of pitching rehabilitation. www.thebaseballpage.com/players/johnto01.php