Although everyone thinks of the Boston Celtics鈥 eight straight championships, which began in 1959, the Minneapolis Lakers, with center George Mikan, the game鈥檚 first dominant big man, were the NBA鈥檚 first repeat winners in 1949 and 1950, and they did themselves one better with a three-peat run from 1952 to 1954. Mikan not only was big and strong at 6 ft. 10. in., he was far more coordinated than most players his size, and was known for his ability to make hook shots with either hand. His effectiveness near the basket led to several rule changes. In college, at DePaul, he swatted away so many shots from the rim that goaltending was outlawed. In the NBA, the lane was widened from 6 feet to 12 feet to prevent in from camping under the basket. Also, because some teams resorted to stalling in trying to compete against the Lakers, the league adopted the 24-second shot clock.