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:

    “She might have been old once and now, miraculously, young again—but with the memory of that other life intact. She seemed to know the world down there in the dark hall and beyond for what it was. Yet knowing, she still longed to leave this safe, sunlit place at the top of the house for the challenge there.”
    —Paule Marshall (b. 1929)

    “The horse stares at its captor, barely remembering the free kicks of youth.”
    —Mason Cooley (b. 1927)