user: Question: How many partners were there when the score was 7–6 (7–4) , 6–3?
Columns: ['Outcome', 'Year', 'Championship', 'Surface', 'Partner', 'Opponents', 'Score']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', 2002.0, 'Australian Open', 'Hard', 'Fabrice Santoro', 'Mark Knowles Daniel Nestor', '6–7 (4–7) , 3–6']
SQL:

assistant: SELECT COUNT("Partner") FROM "Table" WHERE "Score" = '7–6 (7–4) , 6–3';