What is 2009, when 2011 is "Q2"?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2009" FROM "singles_performance_timeline" WHERE "2011"='q2';