What is Adjusted true SG?
Skill rating from the tour's published per-round strokes gained: each measured round is adjusted for the strength of the field it was earned against, recent rounds count more (180-day half-life over a 2-year window), and thin samples are shrunk toward the tour average. Higher is better; +2 means about two strokes per round better than an average tour player.
A disclosed model over published SG — see the methodology page. Players under 12 measured rounds are not rated at all rather than rated on noise.
OTIS tracks this stat across 15 PGA Tour seasons — see it for every player, or read how the numbers are sourced in the methodology.