CREATE TABLE "professional_record" (
  "result" text,
  "opponent" text,
  "type" text,
  "round" text,
  "date" text
);

Question: Which Result has a Round of 6?
SQL: SELECT "result" FROM "professional_record" WHERE "round"='6';

Question: When is a Type of tko, and an Opponent of jesse brinkley
SQL: SELECT "date" FROM "professional_record" WHERE "type"='tko' AND "opponent"='jesse brinkley';

Question: Which Result has an Opponent of steve walker?
SQL: SELECT "result" FROM "professional_record" WHERE "opponent"='steve walker';

Question: Which Opponent has a Type of ud and a Round of 10 on 2008-06-11?
SQL: SELECT "opponent" FROM "professional_record" WHERE "type"='ud' AND "round"='10' AND "date"='2008-06-11';

Question: Which Opponent has a Type of tko, and a Round of 2 (6) on 2006-09-20?
SQL: SELECT "opponent" FROM "professional_record" WHERE "type"='tko' AND "round"='2 (6)' AND "date"='2006-09-20';

Question: When has a Type of tko, and a Round of 1 (6)
SQL: SELECT "date" FROM "professional_record" WHERE "type"='tko' AND "round"='1 (6)';