Where were the 2009 and 2011 Grand Slam Tournaments?
CREATE TABLE "doubles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2011" text,
  "2012" text,
  "2013" text
);
SELECT "2011" FROM "doubles_performance_timeline" WHERE "2009"='grand slam tournaments';