Question: What is the birthdate of this American professional basketball player who played for the Atlanta Hawks and who is the son of a retired American professional basketball player, head coach, and former General Manager of the National Basketball Association's Los Angeles Clippers?
Sentence (from "Mike Dunleavy Jr."): Michael Joseph Dunleavy Jr. (born September 15, 1980) is an American professional basketball player who last played for the Atlanta Hawks of the National Basketball Association (NBA).
Relevant evidence: Yes