No. Football (soccer!) leagues award 3 points for win, but only 1 for a draw (tie?). Many rugby union leagues award bonus points for scoring 4 tries, and for losing by 7 points or less, so the value of a match ranges 4 points up to thoeretically ... read more
No. Depending upon the classification point system used, many sports are not true zero sum games (where any gain by team A is precisely balanced by a loss from team B) NHL Hockey is one clear example of this. read more
A zero-sum game is a situation in which a participant's gain (or loss) is exactly balanced by the losses (or gains) of the other participant. For exemple, a soccer game is a zero sum game: when a team wins the other team loses. read more