1/4 cup orange juice
1/4 cup lemon juice
1/4 cup minced shallots
1 tablespoon sugar
1/2 cup olive oil
1 teaspoon salt
1/2 teaspoon pepper
1/2 seedless watermelon, cut in 1-inch cubes
2 cups of tomatoes, 1-inch dice
4 ounces feta cheese, 1/2-inch diced
Whisk together the lemon juice, shallots, sugar, salt, and pepper. Slowly pour in the olive oil, whisking constantly, to form an emulsion.
Place the tomatoes, watermelon and feta in a large bowl. Drizzle with enough vinaigrette to coat the lightly and toss well.