CREATE TABLE table_15300 ("Club" TEXT, "Winners" TEXT, "Finalists" TEXT, "Winning editions" TEXT, "Not winning editions" TEXT)

Who is Winners that has editions of 1992, 2003 as Not Winning
SELECT "Winners" FROM table_15300 WHERE "Not winning editions" = '1992, 2003'
SELECT "Winners" FROM "table_15300" WHERE "Not winning editions" = '1992, 2003'