who is the opponent when the method is tko (punches) at 4:26 of round 1?
CREATE TABLE "post_show_success" (
  "result" text,
  "tuf_competitor" text,
  "opponent" text,
  "method" text,
  "event" text,
  "date" text
);
SELECT "opponent" FROM "post_show_success" WHERE "method"='tko (punches) at 4:26 of round 1';