user: Question: Who is the opponent when the record is 3-8?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '3-9', 'Vinicius Lima', 'KO (punch)', 'Hard Fight Championship', 'Cuiaba , Mato Grosso, Brazil']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Record" = '3-8';