 Complete the following phrase:  His principal rival, Wilt Chamberlain, listed at 71 2.15 m, 275 pounds 124 kg, lacked Russells supporting cast. Chamberlain played college ball for the Kansas Jayhawks, leading them to the 1957 title game against the North Carolina Tar Heels. Although the Jayhawks lost by one point in triple overtime, Chamberlain was named the tournaments Most Outstanding Player. Briefly a member of the Harlem Globetrotters before joining the Philadelphia Warriors of the NBA in 1959, Chamberlain won two Championships, in 1967 with the Philadelphia 76ers and 1972 with the Los Angeles Lakers, although his teams were repeatedly defeated by the Celtics in the Eastern Conference and NBA Finals. He also won seven scoring titles, eleven rebounding titles, and four regular season Most Valuable Player awards, including the distinction, in 1960, of being the first rookie to receive the award. Stronger than any player of his era, he was usually capable of scoring and rebounding at will. Although he was the target of constant double- and triple-teaming, as well as fouling tactics designed to take advantage of his poor free-throw shooting, he set a number of records that have never been broken. Most notably, Chamberlain is the only player in NBA history to average more than 50 points in a season and 