Question: What year weas John McEnroe the champion?
SQL: SELECT AVG("Year") FROM "2-17814626-1" WHERE "Champion" = 'John McEnroe';

Question: Who was the runner-up, when the champion was Björn Borg after 1978?
SQL: SELECT "Runner-up" FROM "2-17814626-1" WHERE "Champion" = 'Björn Borg' AND "Year" > 1978.0;

Question: Who was the champion earlier than 1978 when the runner-up was Jimmy Connors?
SQL: SELECT "Champion" FROM "2-17814626-1" WHERE "Runner-up" = 'Jimmy Connors' AND "Year" < 1978.0;