Which 2009 has a 2008 of A, and a 2010 of 4r?
CREATE TABLE "performance_timeline" (
  "tournament" text,
  "2006" text,
  "2007" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2009" FROM "performance_timeline" WHERE "2008"='a' AND "2010"='4r';