If you have luck, there will be a 100% assurance the winning, as in all gambling games needs to have luck to win.
I always like to point to games where the underdog wins and all the commentators are stunned that there was "no chance of them winning"...
The fact is that if you turn up to play your match/fixture you have more of a chance of winning than if you did not turn up at all. There's no such thing as 100% chance a team will win - Not every time at least.
Yes it could be 100% with luck because good luck means a win, but in reality there's no such thing as 100% chances of winning, even if you bet on a heavy favorites with odds 1.05 or even 1.01, understood could still upset the heavy favorite.