CREATE TABLE table_204_461 (id DECIMAL, "res." TEXT, "record" TEXT, "opponent" TEXT, "method" TEXT, "event" TEXT, "date" TEXT, "round" DECIMAL, "time" TEXT, "location" TEXT, "notes" TEXT)

when was the first win by decision ?
SELECT "date" FROM table_204_461 WHERE "res." = 'win' AND "method" = 'decision' ORDER BY "date" LIMIT 1
SELECT "date" FROM "table_204_461" WHERE "method" = 'decision' AND "res." = 'win' ORDER BY "date" NULLS FIRST LIMIT 1