• 0.1 baseline — 0.6 × season 0.1 (9 gm) + 0.4 × last 9 0.1
• −0.0 opponent leak — they concede 9.2/game vs a 9.4 league average
• wet forecast: too thin to count (1 gm) — shown, adds nothing

Derived, not measured — plain arithmetic over his real games, shown in full. Adjustments can overlap (a game at this ground can also be a wet one); they add simply, and this note is the admission.