Conversation so far:
Was there anything special about Johnny Carson outside his birth/death, statistics, and name?
Did Johnny Carson do anything other than The Tonight Show?
Johnny Carson was an avid tennis player.
How did Johnny Carson do as a tennis player?
Johnny Carson was not a particularly gifted player, writes lawyer Henry Bushkin, but he was devoted to the sport, and he thought he was better than he was.“

Question: What did he do at Wimbledon?
Self-contained rewrite: What did Johnny Carson do at Wimbledon?