Dikembe Mutombo was a Rocket for the final five years of his career, 2004-2009. Mutombo had a long NBA career, but his days in Houston were a far cry from his early years with the Denver Nuggets and Atlanta Hawks. Hakeem Olajuwon. Moses Malone. Elvin Hayes. Calvin Murphy. Clyde Drexler. Ralph Sampson. Yao Ming.