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_46 (round INTEGER, opponent VARCHAR)
### Question:
How many rounds is the fight against Michael Chavez?
### Answer:
SELECT AVG(round) FROM table_name_46 WHERE opponent = "michael chavez"