1.
Stir red wine, peppercorns, sugar, and salt together and heat for about 5 minutes in saucepan over medium heat. Allow to cool slightly, then pour into large resealable plastic bag, Add steak, seal the bag, turn to coat, and refrigerate for 1 hour to marinate.
2.
Heat your gas or charcoal grill to high (Here's how to tell if it's high: Hold your hand about four inches above the cooking surface. After 2 to 3 seconds, the heat will force you to pull your hand away.)
3.
Oil the grill grate, using an oiled rag.
4.
Place the steak on the grill. Use these cooking times to cook your steak to medium: 2 to 3 minutes per side for a 1/2-inch thick steak, 4 to 6 minutes per side for a 1-inch thick steak, 6 to 9 minutes per side for a 1 1/2 to 2-inch thick steak.
5.
While steak is grilling, pour the marinade into a skillet, bring to a boil, then reduce heat to medium-low and and simmer for about 10 minutes to reduce by half. Serve steak with wine sauce.
6.
Take the steak off the grill. Let it rest 2 to 3 minutes to allow the juices to reabsorb into the steak.