Conversation so far:
Who were the Oakland Oaks?
The Oakland Oaks were a charter member of the original American Basketball Association. Originally formed in February 1967 as the Oakland Americans.
Did Rick Barry play for the Oaks many years?
Rick Barry played for the Oakland Oaks for two years.

Question: How did he join the team?
Self-contained rewrite: How did Rick Barry join the Oakland Oaks?