In heavy skillet over medium heat, sauté onion and garlic in olive oil until tender, about 5 minutes.
Add parsley and oregano.
Add to potatoes along with eggs, bread crumbs, 1/3 cup of the ketchup, salt and pepper and mix well until thoroughly combined.
Add ground beef and mix gently just until combined.
Place on a casserole pan, shape mixture into an 8 x 4-inch loaf.
Spread remaining 1/3 cup ketchup over top of loaf. Bake at 375°F for 70-75 minutes or until center is no longer pink and instant read thermometer reads 160°F when inserted in center of loaf. Let stand, covered, 15 minutes before slicing.