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_29050051_3 (_number INTEGER, position VARCHAR, previous_school VARCHAR)
### Question:
What is the highest number a guard from brophy college prep wore?
### Answer:
SELECT MAX(_number) FROM table_29050051_3 WHERE position = "Guard" AND previous_school = "Brophy College Prep"