Official NHA Assessment
Race 3: SA DERBY 4 APRIL MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)
Line Horse
Lanteri
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Onceinabluemoon 2 58.5 1 0.00 0.0 72 77 77 +5 2 The Reason 3 60.0 2 2.20 3.0 74 77 77 +3 3 Lanteri 3 57.5 3 2.80 3.0 71 71 71 +0 4 Erik's Girl 2 57.5 4 3.00 0.0 53 77 77 +24 5 Savara's Princess 2 60.0 5 4.00 0.0 71 81 81 +10 6 Baby Red 2 60.0 6 10.00 0.0 67 80 80 +13 7 Amaze Me 2 60.0 7 11.30 0.0 64 80 80 +16 99 Trip Of Faith 3 60.0 99 0.00 3.0 - 74 74 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Onceinabluemoon | 72 | 75 | 77 | -2 | 0.0 | - | |
| 2 | The Reason | 74 | 73 | 77 | -4 | 3.0 | - | |
| 3 | Lanteri Line | 71 | 69 | 71 | -2 | 3.0 | ||
| 4 | Erik's Girl | 53 | 67 | 77 | -10 | 0.0 | - | |
| 5 | Savara's Princess | 71 | 67 | 81 | -14 | 0.0 | - | |
| 6 | Baby Red | 67 | 65 | 80 | -15 | 0.0 | - | |
| 7 | Amaze Me | 64 | 64 | 80 | -16 | 0.0 | - | |
| 99 | Trip Of Faith | - | 79 | 74 | +5 | 3.0 | - |
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