It's a boxing term. It means that though you may be outclassed by your opponent, if you land a good punch, you can win.
Bob was down in the polls, but if he did well in the debate, he'd have puncher's chance of winning the election.
โดย BrianSnat 15 กรกฎาคม 2015
term used in boxing to describe something that has a slight chance of happening
I thought i had a puncher's chance of going out with her even though she's the hottest girl in school.
โดย Scott Delhommer 27 เมษายน 2008
A term used in MMA (mixed martial arts) meaning that a puncher always has a chance to win the fight by landing even one punch.
Ross is a boxer so he always has a puncher's chance.
โดย TUF-guy 09 มกราคม 2010