Cut mozzarella cheese into 1 inch cubes and set aside. Place three shallow bowls beside each other, filling the first one with flour, the second one with eggs and milk and the third with bread crumbs. Roll each cheese cube in flour, then egg mix then roll into breadcrumbs and place on plate. Repeat with remaining cheese cubes until all coated. In large skillet or saucepan, heat 2 inches of oil to 350. Set a large plate topped with paper towels off to the side. Using slotted spoon, lower a few cheese cubes at a time into oil, making sure they stay separated while frying. Remove from oil using spoon after 1 min. or when the cubes are golden brown, and place on paper towels to drain. Let oil return to 350 before making the next batch. Repeat until all cheese cubes are fried. Heat pizza sauce in microwave or on the stove top until warm. Serve warm fried cheese balls.