Question: What is the birth date of this American professional basketball player, who entered the league out of high school and was a recruit to the 2004-05 Duke Blue Devil men's basketball team?
Sentence (from "Mason Plumlee"): As a freshman in 2009–10, he was a back-up forward for the Duke Blue Devils men's basketball team's national championship team, playing with his older brother Miles.
Relevant evidence: No