Unlikely victor: Black Beauty? (4,5)
I believe the answer is:
dark horse
This could be a double definition.
'unlikely victor' is the first definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'black beauty?' is the second definition.
(Black Beauty is a fictional black horse)
Can you help me to learn more?
(Other definitions for dark horse that I've seen before include "Little is known of its properties" , "Brown heroin" , "Unexpected (possible) winner" , "Successful competitor of whom little was known, like colourless equine" , "it may be foolish to discount" .)