What does "sporting chance" mean?

A fairly reasonable chance of success.

Sporting chance

Common synonyms include: best bet, blind bargain, chance at odds, fair chance, favorable prospect, flip of a coin.

noun

noun ·Rare ·Advanced level

Noun

1
A fairly reasonable chance of success.
"You think he has a sporting chance? I wouldn't call even him a long shot!"
2
a reasonable probability of success wordnet

"You think he has a sporting chance? I wouldn't call even him a long shot!"