In spite of seeming very unlikely, as in Against all odds we had a snowstorm in early May, or Against all odds the slower team won. This transfer of a betting term to general usage occurred about 1900.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use against all odds in a sentence
And talk about an against-all-odds romance: for years it seemed as though nothing could keep Hunter and Edwards apart.What You Can Learn From John Edwards and Rielle Hunter | Michelle Cottle | June 27, 2012 | THE DAILY BEAST
This is precisely the sort of inspirational, irresistible against-all-odds victory from which blockbuster fiction is made.Hunger Games: Mitt Romney Needs to Tap His Inner Katniss Everdeen | Michelle Cottle | March 30, 2012 | THE DAILY BEAST