Conversation so far:
What legacy did oscar leave behind?
Charleston was one of the early Negro league baseball stars.
How successful was he?
By 1920 he was generally considered as "the greatest center fielder and one of the most reliable sluggers in black baseball..
How did the media view him?
reported that Charleston "did everything exceptionally well.

Question: How did Oscar die?
Self-contained rewrite: How did Oscar Charleston die?