What is 2009, when 2004 is 2R, and when 1993 is A?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "1993" text,
  "1994" text,
  "1995" text,
  "1996" text,
  "1997" text,
  "1998" text,
  "1999" text,
  "2000" text,
  "2001" text,
  "2002" text,
  "2003" text,
  "2004" text,
  "2005" text,
  "2006" text,
  "2007" text,
  "2008" text,
  "2009" text
);
SELECT "2009" FROM "singles_performance_timeline" WHERE "2004"='2r' AND "1993"='a';