The TV series does not confirm if its version of the Prize also means that the victor will become a mortal man. In the very first episode of the series, Duncan MacLeod says, "The last one will have the power of all the immortals who ever lived. Enough power to rule this planet forever.
The TV series does not explicitly state whether the prize grants immortality or if it means the winner will become a mortal man. The show's first episode features Duncan MacLeod stating that the victor will possess the power of all immortals who have ever lived and enough power to rule the world, suggesting a potential connection between the prize and mortality.