CREATE TABLE table_name_72 (method VARCHAR, opponent VARCHAR, record VARCHAR)

Opponent of sergei bondarovich, and a Record of 2 0 had what method?
SELECT method FROM table_name_72 WHERE opponent = "sergei bondarovich" AND record = "2–0"
SELECT "method" FROM "table_name_72" WHERE "2–0" = "record" AND "opponent" = "sergei bondarovich"