user: Question: Which opponent led to a record of 10-6?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Loss', '10-6', 'Per Eklund', 'Submission (rear naked choke)', 'UFC 89', 3.0, '1:47', 'Birmingham , England']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Record" = '10-6';