Get out and measure your ingredients.
Combine ketchup, salt, pepper, thyme, oregano, and rosemary in bowl.
Rub ketchup mixture all over roast
Then wrap roast with plastic wrap and refrigerate for at least 6 hours or up to 24 hours.
Set wire rack inside rimmed baking sheet. Unwrap roast.
Cook, at 250 degrees, covered for 2 hours and thirty minutes.
Remove cover and cook until meat registers 125 degrees (for medium-rare), between 30 and 45 minutes more for medium rare.
Remove roast from smoker, transfer to prepared wire rack, and tent loosely with foil. Allow roast to rest for about 30 minutes or up to 1 hour.
Place roast on serving platter.
Slice and serve.
Enjoy every bite!