sporting chance vs probability

sporting chance and probability both are nouns.

Word	Noun	Adjective	Verb	Adverb
sporting chance	Yes	No	No	No
probability	Yes	No	No	No

As nouns, probability is a hypernym of sporting chance; that is, probability is a word with a broader meaning than sporting chance:

sporting chance: a reasonable probability of success
probability: a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible

Other hypernyms of sporting chance include chance.

sporting chance (noun)	probability (noun)
a reasonable probability of success	the quality of being probable; a probable event or the most probable event
	a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible