Generously brush pork with cider vinegar. Apply Rub, pressing slightly to aid adhesion. Spray with non-stick cooking spray. Refrigerate at least 1 hour.
Place rosemary in the bottom of a roasting pan and place garlic in a circle around it. Place pork on top.
Some may wish to be a bit bolder and make slits in the meat to insert the rosemary and garlic into the roast.
Insert an oven-safe probe thermometer into the center and bake at 375°F until internal temperature reaches 145°F.