CREATE TABLE table_name_53 (school_club_team VARCHAR, nationality VARCHAR, position VARCHAR)

Tell me the School/Club team of the player from the United States that play'de guard?
SELECT school_club_team FROM table_name_53 WHERE nationality = "united states" AND position = "guard"
SELECT "school_club_team" FROM "table_name_53" WHERE "guard" = "position" AND "nationality" = "united states"