Official NHA Assessment
Race 4: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 96 HANDICAP (Open)
Line Horse
Tchaikovsky
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
10 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Laguna Verde 5 59.0 1 0.00 0.0 94 91 94 +0 2 Tirpitz 6 55.5 2 1.20 0.0 87 88 88 +1 3 Tchaikovsky 6 56.0 3 2.20 0.0 88 88 88 +0 4 Whispers Of War (AU 7 54.5 4 4.20 0.0 88 83 83 -5 5 Tizona 3 56.5 5 5.00 5.0 89 76 79 -10 6 Tsar Bomba 3 58.5 6 5.05 5.0 93 80 83 -10 7 Suryavarman 2 57.0 7 9.25 0.0 90 87 87 -3 99 Argo Alley 2 59.0 99 0.00 0.0 - 91 91 +0 99 On The Horizon 4 59.0 99 0.00 2.5 - 86 86 +0 99 Captain Of Grit 3 55.0 99 0.00 5.0 - 73 73 +0 99 Fast Love 4 58.0 99 0.00 2.5 - 84 84 +0 99 Team Gold 3 60.5 99 0.00 5.0 - 84 84 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Laguna Verde | 94 | 86 | 94 | -8 | 0.0 | - | |
| 2 | Tirpitz | 87 | 82 | 88 | -6 | 0.0 | - | |
| 3 | Tchaikovsky Line | 88 | 81 | 88 | -7 | 0.0 | ||
| 4 | Whispers Of War (AUS) | 88 | 64 | 83 | -19 | 0.0 | - | |
| 5 | Tizona | 89 | 83 | 79 | +4 | 5.0 | - | |
| 6 | Tsar Bomba | 93 | 91 | 83 | +8 | 5.0 | - | |
| 7 | Suryavarman | 90 | 84 | 87 | -3 | 0.0 | - | |
| 99 | Argo Alley | - | 110 | 91 | +19 | 0.0 | - | |
| 99 | On The Horizon | - | 100 | 86 | +14 | 2.5 | - | |
| 99 | Captain Of Grit | - | 84 | 73 | +11 | 5.0 | - | |
| 99 | Fast Love | - | 90 | 84 | +6 | 2.5 | - | |
| 99 | Team Gold | - | 97 | 84 | +13 | 5.0 | - |
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