Question: In which year was this player born who announced his retirement due to a back injury early in the season during the unfortunate 2002–03 Toronto Raptors season?
Sentence (from "Hakeem Olajuwon"): Hakeem Abdul Olajuwon ( ; ] ; born January 21, 1963), formerly known as Akeem Olajuwon, is a Nigerian-American former professional basketball player.
Relevant evidence: Yes