What is 2008, when 2009 is "A", and when Tournament is "Madrid Masters"?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2008" FROM "singles_performance_timeline" WHERE "2009"='a' AND "tournament"='madrid masters';