How many people were in attendance when the Washington Nationals had a score of 7-3 and a loss of Worrell (0-1)?
CREATE TABLE "game_log" (
  "date" text,
  "opponent" text,
  "score" text,
  "loss" text,
  "attendance" real,
  "record" text
);
SELECT COUNT("attendance") FROM "game_log" WHERE "score"='7-3' AND "loss"='worrell (0-1)';