The etymology of "winning hands down"

And speaking of common expressions, after realizing I couldn't explain the basis for the origin of this common phrase, I located the explanation at The Phrase Finder - a very useful online site for this type of information:

Jockeys need to keep a tight rein in order to encourage their horse to run. Anyone who is so far ahead that he can afford to slacken off and still win he can drop his hands and loosen the reins - hence winning 'hands down'. This is recorded from the mid 19th century. For example, 'Pips' Lyrics & Lays, 1867:

"There were good horses in those days, as he can well recall, But Barker upon Elepoo, hands down, shot by them all."

It began to be used in a figurative sense, to denote an easy win in other contexts, from the early 20th century.