When did Bonecrusher win the championship at Bayamón, Puerto Rico?
CREATE TABLE "current_iwa_champions" (
  "championship" text,
  "champion_s" text,
  "previous_champion_s" text,
  "date_won" text,
  "location" text
);
SELECT "date_won" FROM "current_iwa_champions" WHERE "location"='bayamón, puerto rico' AND "champion_s"='bonecrusher';