user: Question: Opponent of Sergei Bondarovich, and a Record of 2–0 had what method?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Round']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '55–10 (1)', 'Kazuhiro Nakamura', 'Decision (unanimous)', '2']
SQL:

assistant: SELECT "Method" FROM "Table" WHERE "Opponent" = 'Sergei Bondarovich' AND "Record" = '2–0';