Official NHA Assessment
Race 4: THREE TO TANGO MERIT RATED 85 HANDICAP (Open)
Line Horse
Ultimate Jewel
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
1 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Admirals Chance 5 59.0 1 0.00 0.0 83 83 83 +0 2 Ultimate Jewel 5 60.0 2 2.00 0.0 85 85 85 +0 3 Queen Of Fire 3 54.0 3 2.10 5.0 80 63 70 -10 4 Kallipos 3 55.0 4 3.85 5.0 75 65 65 -10 5 Battle Of Seattle 2 53.0 5 7.85 3.5 71 64 64 -7 6 Nandine 3 54.5 6 9.10 5.0 74 64 64 -10 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Admirals Chance | 83 | 77 | 83 | -6 | 0.0 | - | |
| 2 | Ultimate Jewel Line | 85 | 80 | 85 | -5 | 0.0 | ||
| 3 | Queen Of Fire | 80 | 71 | 70 | +1 | 5.0 | - | |
| 4 | Kallipos | 75 | 63 | 65 | -2 | 5.0 | - | |
| 5 | Battle Of Seattle | 71 | 59 | 64 | -5 | 3.5 | - | |
| 6 | Nandine | 74 | 60 | 64 | -4 | 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