Meanings of have a puncher in English

Italy will, however, have a puncher's chance in their three home matches, as South Africa discovered.

The odds must be against Dougherty, although if attitude counts for anything he must have a puncher's chance.

Still, they have a puncher's chance.

Then I heard, with perfect irrelevance to Herman Wagner, that she wouldn't have a puncher on the place that owned his own horse.

They still have a puncher's chance to steal this division, a chance that would be greatly enhanced if starting quarterback Aaron Rodgers could return.