Coat a large nonstick skillet with cooking spray and set pan over medium heat. In a medium bowl, whisk together eggs, eggs whites and club soda until frothy; pour into pan and cook until underside is firm. Fold eggs over into an omelet and cook through, about 2 to 3 minutes more; remove eggs from skillet and cover to keep warm.
Add roast beef to skillet; cook until warmed through, flipping once, about 1 to 2 minutes.
Cut omelet into quarters and season with salt and pepper; serve each omelet quarter with 2 ounces of roast beef and 2 1/4 teaspoons of steak sauce.
*You can also use steak instead of the roast beef (could affect SmartPoints value).