Why is it not gamble?
According toĀ Gambling Act 2005 in the United Kindom, sports for reward is not gamble.
Gaming & game of chance
(1)In this Act āgamingā means playing a game of chance for a prize.
(2)In this Act āgame of chanceāā
(a)includesā
(i)a game that involves both an element of chance and an element of skill,
(ii)a game that involves an element of chance that can be eliminated by superlative skill, and
(iii)a game that is presented as involving an element of chance, but
(b)does not include a sport.
(3)For the purposes of this Act a person plays a game of chance if he participates in a game of chanceā
(a)whether or not there are other participants in the game, and
(b)whether or not a computer generates images or data taken to represent the actions of other participants in the game.
(4)For the purposes of this Act a person plays a game of chance for a prizeā
(a)if he plays a game of chance and thereby acquires a chance of winning a prize, and
(b)whether or not he risks losing anything at the game.
(5)In this Act āprizeā in relation to gaming (except in the context of a gaming machine)ā
(a)means money or money’s worth, and
(b)includes both a prize provided by a person organising gaming and winnings of money staked.