CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2006" text,
  "2007" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);

Question: What tournament in 2006 had a score of 0-0?
SQL: SELECT "tournament" FROM "singles_performance_timeline" WHERE "2006"='0-0';