Blade vs Sonja (Underworld)
Blade learns of a top secret project that the vampires are working on and heads out to stop it. He easily infiltrates the laboratory where the project is being developed and finds it to be a space-time warp designed to allow instant travel across vast distances.
Unfortunately a squad of vampires attack and in the confusion the device is triggered. A space-time portal opens and Blade is sucked in. He touches down in a forest at night.
Sonja and a team of Death Dealers are patrolling for feral werewolves when Blade appears behind them. He senses something 'off' about them, but decides to attack anyway. He lost most of his weapons in the warp, but still has his sword and one automatic pistol.
Blade opens fire, wiping out the vampires until only Sonja remains (she was furthest from Blade). Out of ammunition, Blade tosses his gun away and draws his sword. Sonja dismounts from her horse and draws her own sword.
To sum up:
They are fighting in the woods surrounding Viktor's castle. Blade has only his sword, no other weapons. Sonja has her sword, the one that can launch throwing stars from the guard.
Who wins?