It's no joke that Abraham Whistler really hates vampires... He's been training to kill them half of his adult life, and even served as the mentor to Blade himself! But, how would he fair against the Savageland 'vampire' Sauron?
One week prep time, gives him time to know who he's going against and how to hunt 'em.
It would appear that way at first, Sauron being a rather powerful mutant... but, I wouldn't doubt Whistlers ingenuity. He's probably taken down Vampires at least on par with Sauron, but one can only assume... He could probably come up with something pretty clever to ground the beast. How resistant is Sauron to bullet rounds anyway??
Well, obviously Sauron is way above your average vampire on multiple levels, and certainly doesn't share their weaknesses... And it could be easily possible for him to get the jump on Whistler... In that case, he's a goner (we are taking about a villain who gives the X-Men trouble!) But, there are two sides to every argument; Whistler has access to a large arsenal of weaponry and is skilled enough to dispatch of vampires over a long career. With a little prep, he could maybe stand a chance... Even if Sauron isn't allergic to silver, a silver stake through the heart from a shot gun blast is going to be a mortal wound. And even if he doesn't turn to ash in UV Lights, he could be blinded by a flash grenade.