What does the -1 mean?
I'm guessing
Holland draw = loss
Holland win by 1 goal = stake returned
Holland win by 2 or more = win
win if Holland wins by at least two goal margin, otherwise I lose. Odds were 17/10 which tells me nothing or 2.70 as we do it. Guess I just start putting on the decimal odds, it's easier for you to understand that than me understanding fractions.