CREATE TABLE table_7338 ("Tournament" TEXT, "1986" TEXT, "1987" TEXT, "1988" TEXT, "1989" TEXT, "1990" TEXT, "1991" TEXT, "1992" TEXT, "1993" TEXT, "1994" TEXT, "1995" TEXT, "1996" TEXT, "1997" TEXT, "Career SR" TEXT, "Career Win-Loss" TEXT)

What shows for 1987 when 1995 shows 1r, 1986 is a, and 1998 is sf?
SELECT "1987" FROM table_7338 WHERE "1995" = '1r' AND "1986" = 'a' AND "1988" = 'sf'
SELECT "1987" FROM "table_7338" WHERE "1986" = 'a' AND "1988" = 'sf' AND "1995" = '1r'