CREATE TABLE table_8451 ("Outcome" CLOB, "Date" FLOAT, "Tournament" CLOB, "Surface" CLOB, "Partner" CLOB, "Opponents" CLOB, "Score" CLOB)

When was his first game on a clay surface where he scored 0 6, 3 6?
SELECT MIN("Date") FROM table_8451 WHERE "Surface" = 'clay' AND "Score" = '0–6, 3–6'
SELECT MIN("Date") FROM "table_8451" WHERE "Score" = '0–6, 3–6' AND "Surface" = 'clay'