CREATE TABLE table_203_270 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "event" TEXT, "notes" TEXT)

what year was first time to win an event
SELECT "year" FROM table_203_270 WHERE "position" = 1 ORDER BY "year" LIMIT 1
SELECT "year" FROM "table_203_270" WHERE "position" = 1 ORDER BY "year" NULLS FIRST LIMIT 1