CREATE TABLE table_59691 ("Tournament" TEXT, "1990" TEXT, "1991" TEXT, "1992" TEXT, "1993" TEXT, "1994" TEXT, "1995" TEXT, "1996" TEXT, "1997" TEXT, "1998" TEXT, "Career SR" TEXT, "Career Win-Loss" TEXT)

Madrid (Stuttgart) tournament with a 1996 of A has this for a Career SR?
SELECT "Career SR" FROM table_59691 WHERE "1996" = 'a' AND "Tournament" = 'madrid (stuttgart)'
SELECT "Career SR" FROM "table_59691" WHERE "1996" = 'a' AND "Tournament" = 'madrid (stuttgart)'