This is movie versions only.
Captain America from "The First Avenger" and "Avengers".
Blade from the Blade trilogy.
Both perceive the other as a villain.
Battle ends in death, incapacitation, or KO.
Takes place in a standard warehouse, there are boxes, crates, and other typical warehouse items for cover if needed. Combatants are 50 feet apart.
Captain America has his shield.
Blade has his sword.
Hand to hand only.