Dark Horse

A dark horse is a little-known person or thing that emerges to prominence, especially in a competition of some sort or a contestant that seems unlikely to succeed.

Read more about Dark Horse:  Origin, In The Political Arena, Use in Music and Film, Use in Publishing

Famous quotes containing the words dark and/or horse:

    When I consider how my light is spent,
    Ere half my days, in this dark world and wide,
    And that one talent which is death to hide
    Lodged with me useless.
    John Milton (1608–1674)

    Half the failures of this world arise from pulling in one’s horse as he is leaping.
    Julius Hare (1795–1855)