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_21584646_10 (runner_up VARCHAR, champion VARCHAR)
### Question:
Who is the runner up for the champion of john mcenroe 6–2, 6–3?
### Answer:
SELECT runner_up FROM table_21584646_10 WHERE champion = "John McEnroe 6–2, 6–3"