user: Question: How many times has the score been 6–4, 3–6, [11–13]?
Columns: ['Outcome', 'Year', 'Championship', 'Surface', 'Partner', 'Opponent', 'Score']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', 2002.0, 'Canada (W1)', 'Hard', 'Mike Bryan', 'Mark Knowles Daniel Nestor', '4–6, 7–6 (7–1) , 6–3']
SQL:

assistant: SELECT COUNT("Opponent") FROM "Table" WHERE "Score" = '6–4, 3–6, [11–13]';