Place all marinade ingredients (everything except tenderloin) in a freezer zip bag and mix them well.
Prick the tenderloin with a fork and place in marinade bag. Zip closed, roll around to coat and chill for at least two hours.
Preheat the oven to 350℉.
Remove pork from marinade and place it in a roasting pan. Bake for 40 minutes, or until meat thermometer reaches 145℉ to 150℉. Let the pork rest for 3 to 5 minutes, then slice and serve.
Notes
If you are preparing this recipe as GLUTEN-FREE, just be sure to use brands of soy sauce and Worcestershire sauce that are known to be GF.
If you need the marinating done quickly, just let the tenderloin marinate in the bag at room temperature for 30 minutes.