Question: When was the  American professional basketball player born who currently plays for the Beijing Fly Dragons and led the team with 21.7 points in his first full season with the Knicks?
Sentence (from "Stephon Marbury"): Stephon Xavier Marbury (born February 20, 1977) is an American professional basketball player who currently plays for the Beijing Fly Dragons of the Chinese Basketball Association (CBA).
Relevant evidence: Yes