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_19 (player VARCHAR, position VARCHAR, round VARCHAR)
### Question:
What player has defensive back as the position, with a round less than 2?
### Answer:
SELECT player FROM table_name_19 WHERE position = "defensive back" AND round < 2