What date was M. Grabovski the first start of the game?
CREATE TABLE "regular_season" (
  "game" real,
  "date" text,
  "opponent" text,
  "score" text,
  "first_star" text,
  "decision" text,
  "location" text,
  "attendance" real,
  "record" text,
  "points" real
);
SELECT "date" FROM "regular_season" WHERE "first_star"='M. Grabovski';