The default oven rack position is the middle if it’s not specified. For the most even coverage, this is where you want to put pretty much anything that you’re roasting or baking.

Oven Roasted Rack of Lamb. Serves: 4 to 5 (3 to 4 chops per serving) Ingredients: 2 racks of lamb, frenched (about 1.3 pounds each) 2 tablespoons extra-virgin olive oil ...