That is a difficult question to answer definitively. There have been amazing players throughout the history of the Rockets. Ralph Sampson, Clyde Drexler, Calvin Murphy, Elvin Hayes, Moses Malone and James Harden are all in the running for sure.
For most, the answer is Hakeem Olajuwon. “The Dream” spent 17 seasons with the Rockets, led two championship teams, and was inducted into the Hall of Fame in 2008. He averaged 25.9 points per game, 11.2 rebounds, and 3.3 blocks.