CREATE TABLE table_10023387_1 (doubles_w_l VARCHAR2, player VARCHAR2)

what's the doubles w-l for player seol jae-min (none)
SELECT doubles_w_l FROM table_10023387_1 WHERE player = "Seol Jae-Min (none)"
SELECT "doubles_w_l" FROM "table_10023387_1" WHERE "Seol Jae-Min (none)" = "player"