What is Baseline?
The player's average score per round over the trailing 12 months — their own recent norm.
Raw scores, stroke-play events only.
How it's calculated
This is computed by OTIS from stored round scores rather than published by the tour. A player's recent scoring is measured against their own trailing twelve-month average, so the comparison is with themselves rather than with the field. Only stroke-play rounds count; team and match-play results do not produce comparable scores.
How to read it
Lower is a better scoring average. It is the player's own recent normal, and it is the thing the trend figure measures against.
What it doesn't say
Form is a short-window measure and therefore a volatile one: it is designed to move, and a player at the top of it is not necessarily one of the better players on tour, only one playing better than they usually do. Because the comparison is against a player's own baseline, an improving journeyman can outrank a world-class player in an ordinary patch. It also uses raw scores, so an easy stretch of the schedule flatters it.
OTIS tracks this stat across 15 PGA Tour seasons — see it for every player, or read how the numbers are sourced in the methodology.