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_87 (round VARCHAR, position VARCHAR)
### Question:
During which round was a Hawkeyes player selected for the defensive back position?
### Answer:
SELECT round FROM table_name_87 WHERE position = "defensive back"