What tournament has a 2010 of 1r, and a 2008 of 1r?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2010" text,
  "2011" text,
  "2012" text,
  "2013" text
);
SELECT "tournament" FROM "singles_performance_timeline" WHERE "2010"='1r' AND "2008"='1r';