Creating a perfect Tri-Tip Sandwich can be straightforward if you follow these steps:

1. Marinate the Tri-Tip: In a bowl, combine olive oil, soy sauce, red wine vinegar, Worcestershire sauce, minced garlic, onion powder, black pepper, smoked paprika, and salt. Mix well.

2. Prepare the Meat: Place the Tri-Tip roast in a resealable plastic bag or a shallow dish. Pour the marinade over the meat, ensuring it’s well-coated. Seal the bag or cover the dish, and refrigerate for at least 1 hour, or overnight for best results.

3. Preheat the Grill: When ready to grill, preheat your grill to medium-high heat. Aim for around 375°F (190°C).

4. Grill the Tri-Tip: Remove the meat from the marinade, allowing excess liquid to drip off. Place the Tri-Tip on the hot grill and sear for 5-7 minutes on each side until a nice crust forms.

5. Reduce Heat and Cook: Once seared, move the Tri-Tip to a cooler part of the grill. Close the lid and cook for another 30-40 minutes, or until the internal temperature reaches 135°F (57°C) for medium-rare.

6. Rest the Meat: Once cooked, transfer the Tri-Tip to a cutting board. Cover loosely with aluminum foil and let it rest for 10-15 minutes. This helps retain moisture.

7. Slice the Meat: After resting, slice the Tri-Tip against the grain into thin strips. This ensures the meat stays tender and flavorful.

8. Prepare the Sandwich: Open your sandwich rolls and add a generous layer of sliced Tri-Tip. Top with your choice of fresh veggies and sauces.

9. Serve Immediately: Serve the sandwiches while they are warm for the best taste.

These steps will guide you in creating an incredible Tri-Tip Sandwich that will undoubtedly impress your guests.