Official NHA Assessment
Race 2: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (Open to all horses)
Line Horse
Peace In Our World
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Grazinginthegrass 4 62.0 1 0.00 1.5 111 94 94 -17 2 Peace In Our World 6 58.0 2 1.25 0.0 95 95 95 +0 3 Zig Zag 5 56.5 3 2.50 0.0 88 90 90 +2 4 Jacob's Ladder 4 56.5 4 7.75 1.5 88 83 83 -5 5 Mhlabeni 7 59.5 5 13.00 0.0 96 92 92 -4 6 Ablueazure 3 53.5 6 99.99 3.5 77 73 73 -4 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Grazinginthegrass | 111 | 111 | 94 | +17 | 1.5 | - | |
| 2 | Peace In Our World Line | 95 | 89 | 95 | -6 | 0.0 | ||
| 3 | Zig Zag | 88 | 87 | 90 | -3 | 0.0 | - | |
| 4 | Jacob's Ladder | 88 | 73 | 83 | -10 | 1.5 | - | |
| 5 | Mhlabeni | 96 | 90 | 92 | -2 | 0.0 | - | |
| 6 | Ablueazure | 77 | 76 | 73 | +3 | 3.5 | - |
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