Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_34 (round INTEGER, nationality VARCHAR, player VARCHAR)
### Question:
Which Round has a Nationality of united states, and a Player of jimmy hayes?
### Answer:
SELECT MAX(round) FROM table_name_34 WHERE nationality = "united states" AND player = "jimmy hayes"