CREATE TABLE table_203_673 (id DECIMAL, "#" DECIMAL, "date" TEXT, "opponent" TEXT, "score" TEXT, "win" TEXT, "loss" TEXT, "save" TEXT, "attendance" DECIMAL, "record" TEXT)

what team was the opponent in the first game with over 35,000 attendees ?
SELECT "opponent" FROM table_203_673 WHERE "attendance" > 35000 ORDER BY "date" LIMIT 1
SELECT "opponent" FROM "table_203_673" WHERE "attendance" > 35000 ORDER BY "date" NULLS FIRST LIMIT 1