Every so often I like to pull up the three different publicly-available Wins Above Replacement (WAR) metrics to see how they compare. Fangraphs, Baseball Prospectus, and Baseball Reference all measure WAR differently. Taking the time to see how they differ can be an instructive exercise as taking an average of the three for each player might [citation need] offer a more accurate assessment of how much value they contributed to a team.
On the field, at least. Intangibles are strange forbidden fruits.
I’ve called it 3WAR in the past. Other writers have also done versions of this exercise and so I don’t pretend that it is particularly new or groundbreaking, but physically sitting and cataloguing data forces me to contend with them and think it through.