Steak Marinade

A few weeks ago I made this kebab recipe (with a slight oil variation):

http://www.food.com/recipe/sirloin-steak-kabobs-94818

It was so good, I'm planning on using the same marinade for steak this week. Yum!

Ingredients
1/4 C Wine Vinegar
1/2 C Olive Oil
1/4 C Ketchup
1 tsp Salt
1/2 tsp Oregano
1/4 tsp Black Pepper
2 Tbs Worcestershire Sauce
1/2 C Chopped Onion
2 Cloves Minced Garlic

1. Mix all ingredients in a gallon sized baggie
2. Insert steak and marinate overnight
3. Grill