In a large bowl, lightly beat eggs; add tomato sauce, onion, crumbs, salt and pepper. Add venison and mix well. Press into an ungreased 9-in. x 5-in. loaf pan. Combine brown sugar, mustard and vinegar; pour over meat loaf. Bake, uncovered, at 350° for 70 minutes or until a meat thermometer reads 160°.Yield: 6-8 servings.