Official NHA Assessment
Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens)
Line Horse
Royale Jacket
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Stokesy 3 60.0 1 0.00 5.0 76 68 68 -8 2 Terrence 3 60.0 2 2.40 5.0 67 70 70 +3 3 Royale Jacket 2 60.0 3 3.60 0.0 79 79 79 +0 4 Samuel Sharpe 3 60.0 4 3.90 5.0 - 69 69 +69 5 Underdog 3 60.0 5 4.15 5.0 58 69 69 +11 6 Cuzzie 3 60.0 6 11.35 5.0 53 68 68 +15 7 Jabberwocky 4 60.0 7 99.97 2.5 56 73 73 +17 99 Second To Nunn 2 60.0 99 0.00 0.0 - 78 78 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Stokesy | 76 | 81 | 68 | +13 | 5.0 | - | |
| 2 | Terrence | 67 | 78 | 70 | +8 | 5.0 | - | |
| 3 | Royale Jacket Line | 79 | 74 | 79 | -5 | 0.0 | ||
| 4 | Samuel Sharpe | - | 73 | 69 | +4 | 5.0 | - | |
| 5 | Underdog | 58 | 58 | 69 | -11 | 5.0 | - | |
| 6 | Cuzzie | 53 | 54 | 68 | -14 | 5.0 | - | |
| 7 | Jabberwocky | 56 | 53 | 73 | -20 | 2.5 | - | |
| 99 | Second To Nunn | - | 67 | 78 | -11 | 0.0 | - |
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