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:

    “In spite of the six thousand manuals on child raising in the bookstores, child raising is still a dark continent and no one really knows anything. You just need a lot of love and luck—and, of course, courage.”
    —Bill Cosby (20th century)

    “A good horse will never return to graze on grass it has already passed by.”
    —Chinese proverb.