What was time of the game against the Royals with a record of 81–73?
CREATE TABLE "game_log" (
  "date" text,
  "opponent" text,
  "score" text,
  "loss" text,
  "time" text,
  "att" real,
  "record" text
);
SELECT "time" FROM "game_log" WHERE "opponent"='royals' AND "record"='81–73';