Chinaman's Chance

Hello, I was just hoping some one might know the origin and meaning of the phrase "China-man's chance". Thanks in advance for any assistance.

CHINAMAN'S CHANCE - ".an extremely slim chance or no chance." The first citation is for 1911. An entry before this one is "play (someone) for a Chinaman - to treat as a fool." The earliest citation for that phrase is 1873. From Random House Historical Dictionary of American Slang, Volume 1, A-G by J.E. Lighter, Random House, New York, 1994.

Do I have to say that these phrases are "now usu. considered offensive"?

Nope, please keep saying it.
Eventually and hopefully racist and stereotypical phrases will fade away--not with a bang but.....

I agree.

There is what I think is an interesting use of this word. Both "Chinaman" and "rabbi" mean a person's political sponsor or mentor. I don't know how that meaning came to be. I first read the "chinaman" usage in a mystery about politics in Chicago.