Preheat oven to 350° F. In a large bowl combine beef, sausage, bread crumbs, tomatoes, celery, eggs, horseradish, mustard, salt and pepper to taste; mix well. Place in an ungreased 8 1/2 x 4 1/2 x 2 1/2 -inch loaf pan. Bake for 45 minutes. Remove from oven; drain off fat.
In a small bowl mix catsup, corn syrup and Worcestershire sauce. Brush over meat loaf. Bake 30 minutes longer.