Official NHA Assessment
Race 1: www.sajockeyacademy.com QUALIFIED MAIDEN PLATE (Maidens with 3 runs or more & gross rating of 68 or less)
Line Horse
Saka Gold
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Don't Linngar 3 60.0 1 0.00 7.5 57 61 61 +4 2 Saka Gold 3 60.0 2 2.50 7.5 61 61 61 +0 3 Truly Brave 2 55.0 3 5.50 5.0 54 56 56 +2 4 Brainwave 2 59.0 4 6.80 5.0 58 64 64 +6 5 Raptor Island 2 59.0 5 6.85 5.0 62 64 64 +2 6 Fly Away Robyn 3 57.5 6 12.15 7.5 51 56 56 +5 7 Creator 3 60.0 7 13.25 7.5 53 61 61 +8 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Don't Linngar | 57 | 62 | 61 | +1 | 7.5 | - | |
| 2 | Saka Gold Line | 61 | 60 | 61 | -1 | 7.5 | ||
| 3 | Truly Brave | 54 | 56 | 56 | ✓ Match | 5.0 | - | |
| 4 | Brainwave | 58 | 58 | 64 | -6 | 5.0 | - | |
| 5 | Raptor Island | 62 | 61 | 64 | -3 | 5.0 | - | |
| 6 | Fly Away Robyn | 51 | 48 | 56 | -8 | 7.5 | - | |
| 7 | Creator | 53 | 46 | 61 | -15 | 7.5 | - |
Assessment Methodology
Calculation Steps:
- Identify Line Horse - consistent performer used as reference
- Calculate WFA Allowance based on age, distance, and month
- Apply Drag Adjustment for beaten margin
- Calculate Actual Weight Performance:
Weight - Drag - WFA - Compare to Line Horse to determine race rating
- Apply special rules (maiden caps, layoff allowance)
Key Formulas:
- Drag Effect: Varies by distance (see Benchmarks page)
- 1 length ≈ 1kg at 1 mile (1600m)
- WFA Scale: Based on Admiral Rous's 1855 table
- Rating Points: 1kg = 2 rating points