What is 2006, when 2007 is "1R", and when 2002 is "Q2"?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2001" text,
  "2002" text,
  "2003" text,
  "2004" text,
  "2005" text,
  "2006" text,
  "2007" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text,
  "2013" text
);
SELECT "2006" FROM "singles_performance_timeline" WHERE "2007"='1r' AND "2002"='q2';