Spray a dutch oven with Pam. Heat over medium high heat until hot. Add roast; cook 4-6 minutes, turning to brown evenly.
Combine ketchup & remaining ingredients. Pour over roast & cover tightly. Bake at 160ºC for 2.5 hours or until roast is tender. To serve, slice roast thinly; arrange on serving platter. Spoon sauce over slices.