CREATE TABLE table_203_439 (id NUMBER, "pos." NUMBER, "rider" CLOB, "semi-final points" NUMBER, "final points" NUMBER, "final heats" CLOB, "total points" NUMBER)

their final points is equal to 15
SELECT "rider" FROM table_203_439 WHERE "final points" = 15
SELECT "rider" FROM "table_203_439" WHERE "final points" = 15