How good are these forecasts?
Every forecast scored on seasons the model never saw while its settings were chosen.
This is strokes gained against the field from round scores, not shot-level Strokes Gained from ShotLink: it knows how many strokes a player took, not where they came from.
The cut is the top 65 and ties after two rounds; the Tour's other rules (the Tour Championship's starting strokes, no-cut events) are not reproduced.
Rounds on the other men's tours (PGA Tour, DP World Tour, LIV) count toward each player's skill, since the best players split their time; only this tour's events are forecast and scored.
Withdrawals during an event count as missing the rounds they didn't play.
Course fit (a long hitter's course, a putter's course) is not in the model.