There’s no way Eubanks is -5.1. Apparently RAPTOR is heavily +|- weighted and that’s an incredibly volatile stat that takes year(s) of data to stabilize and even then you have strange outliers here and there.
I believe X axis is the quality of the player they are covering, Y axis is how well they defend them. So picking 3 players, Hart, Winslow and Grant, Hart covers the most difficult player on the opposing team, then Grant, then Winslow. Winslow is the best defender of the 3, then Hart, then Grant. All positive defensive players.
the website 538 was trying to increase their traffic past polling & politics so they decided (I saw a Nate Silver interview) that developing an aggregate stat for the NBA would generate new traffic. So, Raptor was born I have not paid a lot of attention to Raptor. I see that last season, Kevin Love, Porzingis, Cameron Johnson, Donovan Mitchell, and Immanuel Quickley were 5 of the top-10 in total raptor. That tells me something about the stat, and it's not something positive. In fact, raptor seems to just love Porzingis and Donovan Mitchell. Again, that tells me something about the stat, and it's again, not positive I'll just assume whether it's raptor, or PER, or BPM or winshares/48...whatever the single advanced metric you'll get good representation for elite players, and several outliers along with some substantial noise. Probably best to look at all of those stats as well as where players rank on their own teams and how the teams are doing I guess I just don't trust raptor much yet by the way, if you look at Woj and Nate Silver they look like brothers
