I have an array of point differences from each matchup over 13 weeks from fantasy football. I would like to know how "lucky" or "unlucky" a player was over the course of 13 weeks using how close their win or loss was per week(how close their point difference was to zero). Any insights on the best way to do this? Right now I'm using the absolute average difference from zero, but that feels a bit clunky.
More elaboration: I've inserted some data from our competition with the difference in score. The rows are the players and the columns are the week. FF Week 1-10 point difference
The idea is that a win only a few points over zero should increase the luck score, and a loss with a few points below zero. Now I'm thinking I can take the average point difference of a win and a loss and use that as some sort of baseline.
An alternative idea I actually have now is to compare weekly scores and see how many players he or she would have beaten, and a win when that person would have beaten less than half of the other players should increase the luck score. Either way, any insight on both of these would be great!