On a tangent, I was watching Jeopardy tonight and one of the answers in the category Sports was "The first White American drafted first overall in the NBA since 1977." In '77 it was Kent Benson. Of course no one knew the correct response and these were three finalists in this year's Tournament of Champions, which contestants study diligently for.
I wasn't surprised by no one knowing who Flagg is, whereas if it was the first black selected first overall in half a century say in hockey many more people including casual sports fans would know his name, but I was surprised to see Jeopardy have a race-based question (technically an answer) explicitly about a White person. Can't recall it happening before in that type of semi-positive context. Maybe an ulterior motive was to reinforce the myth that Whites are inferior athletes because it had been so long since it happened previously.