Just to add my 2 cents, since this is related to something I've been working on.
For the last four seasons in England's Premier league, clean sheet for both teams or the most unpopular score in soccer 0–0, was the final outcome in 8,8% of the time .
But fortunately for us spectators it's not an easy thing to achieve. In 91% of the cases someone scores.
To survive through the 90 minutes unscratched ( scores like 1-0, 2 0, 0 1, 0-2 ... ) your chances are 35,3% for home, or 24,6% for away team.
If your attacking capabilities averages to one goal per game ( result being your win or a tie: 1-0, 0-1, 1-1 ), your chances of losing that game are 69,6 % for home team, or 72% for away team.
If your forwards know how to put the ball behind goalies back at least 2 times per game, you will loose in only 1,38% of the cases for home or 2,7% for away team.
The ball is round and the grass is slippery, score in each half at least once and you are the champions my friend.
