Official NHA Assessment
Race 2: TAB RUGBY MIDDLE STAKES (For horses with nett rating of 101 and below)
Line Horse
Breeze Over
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Afraad 8 50.0 1 0.00 0.0 75 77 77 +2 2 Black Thorn 4 62.0 2 0.30 6.0 99 95 95 -4 3 Namaqua Blossom 3 50.5 3 0.60 9.5 79 65 69 -10 4 Breeze Over 5 52.0 4 2.75 0.0 84 84 84 +0 5 Mambo Come Tesio 3 52.0 5 5.00 9.5 83 62 73 -10 6 Street Art 3 58.0 6 5.75 9.5 101 74 91 -10 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Afraad | 75 | 79 | 77 | +2 | 0.0 | - | |
| 2 | Black Thorn | 99 | 102 | 95 | +7 | 6.0 | - | |
| 3 | Namaqua Blossom | 79 | 75 | 69 | +6 | 9.5 | - | |
| 4 | Breeze Over Line | 84 | 99 | 84 | +15 | 0.0 | ||
| 5 | Mambo Come Tesio | 83 | 80 | 73 | +7 | 9.5 | - | |
| 6 | Street Art | 101 | 78 | 91 | -13 | 9.5 | - |
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