SELECT date FROM table_name_98 WHERE score_in_the_final = "3–6, 6–3, 6–4" AND opponents_in_the_final = "penny barg paula smith"
Berapa tanggal final yang memiliki skor 3-6, 6-3, 6-4 dan Penny Barg Paula Smith adalah lawan?
CREATE TABLE table_name_98 (date VARCHAR, score_in_the_final VARCHAR, opponents_in_the_final VARCHAR)