Last year I tried rating teams efforts for every game they played in the last 12 months.
Then I would use these ratings to predict what the team will do next week.
The assessed ratings were a prediction of the final score for each team.
So by subtracting one score from the other,I would have my expected margin for the coming game.

This year I intend to rate each player and add up each individual player in the coming game.
The tally will again be the team's predicted score.
Did make a profit last year and hopefully can go slightly better again!