CREATE TABLE table_name_32 (opponent VARCHAR, week VARCHAR, game_site VARCHAR)

Who did the Jets play in their pre-week 9 game at the Robert F. Kennedy memorial stadium?
SELECT opponent FROM table_name_32 WHERE week < 9 AND game_site = "robert f. kennedy memorial stadium"
SELECT "opponent" FROM "table_name_32" WHERE "game_site" = "robert f. kennedy memorial stadium" AND "week" < 9