From Appelman himself: "To make comparing the four easier, there is now a new stats table on the player pages called 'Aggregate Defensive Ratings' (ADR), where the UZR, DRS, TZL, and FSR are given a weighted average." Those four metrics are Ultimate Zone Rating, Defensive Runs Saved, Total Zone, and the Fan's Scouting Report. Frankly, I'm very, very happy about this.