user: Question: What round had a result of 6–7 (6–8) , 1–6?
Columns: ['Edition', 'Round', 'Date', 'Surface', 'Opponent', 'Result']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1988 World Group I', 'QR', 'December 4, 1988', 'Hard', 'Sarah Rafael', '6–3, 6–2']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Result" = '6–7 (6–8) , 1–6';