In 1984, Georgetown, led by Patrick Ewing, defeated the University of Houston, led by Hakeem Olajuwon, to win the NCAA championship. The number one picks in the 1984, 1985, and 1987 NBA Drafts would all be used on centers who made major impacts in the NBA of the 1990s and eventually became members of the Basketball Hall of Fame: Olajuwon in 1984, Ewing in 1985, and Navy's David Robinson in 1987. The Nigerian-born Olajuwon was drafted by the Houston Rockets and paired with power forward Ralph Sampson in what was dubbed the 'Twin Towers' duo. In his second season, 1985–86, the Rockets upset the Lakers in the Western Conference finals. Olajuwon established himself as a dominant player, leading the Rockets to two consecutive NBA championships in 1994 and 1995. In the 1993–94 season he became the only player in NBA history to win the NBA's Most Valuable Player (MVP), Defensive Player of the Year, and Finals MVP awards in the same season. Defensively Olajuwon broke Abdul-Jabbar's career record for blocked shots. Offensively, he was best known for his 'Dream Shake', a series of fakes and spin moves regarded as the pinnacle of big man footwork. Ewing, from Jamaica by way of the Boston area, was drafted by the New York Knicks in 1985, with whom he spent fifteen of his seventeen seasons in the NBA. An eleven-time All Star, Ewing was one of the best shooting centers in NBA history, possessing a baseline jump-shot, as well as being a formidable shot blocker and rebounder. The Knicks were formidable opponents of the Chicago Bulls dynasty in the Eastern Conference playoffs. Ewing's successor as the starting center at Georgetown, Dikembe Mutombo, who played most of his NBA career with the Denver Nuggets and Atlanta Hawks proved a dominant defender. Mutombo, who had not played basketball before arriving in the U.S. from his native Zaire on a USAID scholarship, was among the greatest shot blockers in NBA history, leading the NBA in blocked-shots five consecutive years, in the course of a career in which he ranked second in the history of the league in blocked shots, behind only Hakeem Olajuwon. He was also the recipient of four NBA Defensive Player of the Year Awards, tied for the record with Ben Wallace. The 1992 NBA draft marked the entrance into the league of Shaquille O'Neal, who was drafted by the Orlando Magic.