How many champions are shown for the runner-up of stefan edberg?
CREATE TABLE table_21584646_10 (champion VARCHAR, runner_up VARCHAR)
SELECT COUNT(champion) FROM table_21584646_10 WHERE runner_up = "Stefan Edberg"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21584646_10 (champion VARCHAR, runner_up VARCHAR) Question: How many champions are shown for the runner-up of stefan edberg? [/INST] SELECT COUNT(champion) FROM table_21584646_10 WHERE runner_up = "Stefan Edberg" </s>