hundred-to-one shot

He was never a hundred-to-one shot in that race now that the Mule had regained her head and was running away down mid-channel regardless of obstacles.

Don't know what they are," he whispered to me, "but I'll take a hundred-to-one shot on anything he says.

It's a hundred-to-one shot in the first place, and there is Arthur in the second.

It’s a hundred-to-one shot that father will never see his rug again.

Everybody," I said, "entertains notions of cleaning up a bundle by having the hundred-to-one shot come in by a length.