user: Question: In which round was Dustin Hazelett the opponent?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '14-5', 'Guilherme Faria de Souza', 'Submission (kimura)', 'Premium Fight Championship 2', 4.0, '2:05', 'Campinas , Sao Paulo, Brazil']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Opponent" = 'Dustin Hazelett';