CREATE TABLE "game_log" (
  "date" text,
  "opponent" text,
  "score" text,
  "loss" text,
  "attendance" real,
  "record" text
);

Question: What was the average attendance when the New York Mets were opponents with a record of 51-33?
SQL: SELECT AVG("attendance") FROM "game_log" WHERE "opponent"='new york mets' AND "record"='51-33';