Pizza on the Grill with Sausage and Mozzarella

Name: Pizza on the Grill with Sausage and Mozzarella
Ingredients: 1 package active dry yeast; 1 teaspoon sugar; 1 cup warm water; 1 tablespoon kosher salt; Extra-virgin olive oil; 3 cups 00 flour, plus more for dusting; 1/4 cup extra-virgin olive oil; 1 medium onion, chopped; 2 garlic cloves, minced; 1 bunch fresh basil leaves; 2 (28-ounce) cans whole peeled tomatoes, drained and hand crushed; Kosher salt and freshly ground black pepper; 2 sweet Italian sausages; 1 (8-ounce) ball fresh buffalo mozzarella, water drained; 1/4 cup freshly grated Parmesan