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George Lawrence Mikan Jr., nicknamed "Mr. Basketball", was an American professional basketball player for the Chicago American Gears of the National Basketball League (NBL) and the Minneapolis Lakers of the NBL, the Basketball Association of America (BAA) and the National Basketball Association (NBA). Invariably playing with thick, round spectacles, the 6 ft 10 in (2.08 m), 245 lb (111 kg) Mikan was one of the pioneers of professional basketball. Through his size and play, he redefined basketball as a game dominated in his day by "big men". His prolific rebounding, shot blocking, and ability to shoot over smaller defenders with his ambidextrous hook shot all helped to change the game. He also utilized the underhanded free-throw shooting technique long before Rick Barry made it his signature shot. Mikan had a highly successful playing career, winning seven NBL, BAA, and NBA championships in nine seasons, an NBA All-Star Game MVP trophy, and three scoring titles. He played in the first four NBA All-Star games and was a member of the first six All-BAA and All-NBA Teams. Mikan was so dominant that he prompted several significant rule changes in the NBA, including the introduction of the goaltending rule, the widening of the foul lane—known as the "Mikan Rule"—and the creation of the shot clock. After his playing career, Mikan became one of the founders of the American Basketball Association (ABA), serving as commissioner of the league. He was instrumental in forming the NBA's Minnesota Timberwolves expansion team. In his later years, Mikan was involved in a long-standing legal battle against the NBA to increase the meager pensions of players who had retired before the league became lucrative. In 2005, Mikan died of complications from chronic diabetes. For his accomplishments, Mikan was inducted into the Naismith Memorial Basketball Hall of Fame in 1959. He was also named to the 25th, 35th, 50th and 75th NBA anniversary teams.