user: Question: Name the opponent for 3–6, 4–6, 6–1, 6–7 (7–9)
Columns: ['Edition', 'Round', 'Date', 'Against', 'Surface', 'Opponent', 'W–L', 'Result']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['2002 Davis Cup Europe/Africa Group I', 'QF', '12–14 July 2002', 'Belarus', 'Carpet', 'Alexander Shvec', 'Loss', '2–6, 6–7 (4–7)']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Result" = '3–6, 4–6, 6–1, 6–7 (7–9)';