Official NHA Assessment
Race 6: RACEHORSE OWNERS ASSOCIATION MR 68 HANDICAP (Open)
Line Horse
Rose Of Bayeux
Reference for assessment
Exact Matches
1 / 17
Calculated = Official
Close Matches
3 / 17
Within 2 points
Significant Diffs
11 / 17
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Ushuaia 4 61.5 1 0.00 5.0 71 75 71 +0 2 Rose Of Bayeux 3 56.5 2 3.00 8.0 61 61 61 +0 3 Hilarity (GB) 4 60.0 3 4.25 5.0 68 73 73 +5 4 Silver Celebrity 4 52.0 4 5.50 5.0 50 56 56 +6 4 Irish Sea 3 55.0 4 5.50 8.0 59 56 56 -3 6 Born A Star 3 61.5 6 7.00 8.0 72 69 69 -3 7 Meeneera 4 59.0 7 8.25 5.0 66 70 70 +4 8 Fearless Kitty 3 59.5 8 8.75 8.0 68 65 65 -3 9 Global Ash 4 57.5 9 10.25 5.0 63 67 67 +4 10 Raisetheredlantern 4 56.0 10 10.75 5.0 60 64 64 +4 11 Absolu Noir 8 57.5 11 13.50 0.0 63 77 77 +14 12 Wangan Midnight 4 55.5 12 14.00 5.0 59 63 63 +4 13 Great Melody 3 57.0 13 14.75 8.0 63 60 60 -3 14 Saipan 5 54.0 14 15.25 0.0 56 70 70 +14 15 Head Gardener 3 55.5 15 21.75 8.0 60 57 57 -3 16 Knave Of Diamonds 3 57.5 16 99.99 8.0 64 61 61 -3 99 Different Drum 3 55.0 99 0.00 8.0 - 56 56 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Ushuaia | 71 | 72 | 71 | +1 | 5.0 | - | |
| 2 | Rose Of Bayeux Line | 61 | 77 | 61 | +16 | 8.0 | ||
| 3 | Hilarity (GB) | 68 | 63 | 73 | -10 | 5.0 | - | |
| 4 | Silver Celebrity | 50 | 46 | 56 | -10 | 5.0 | - | |
| 4 | Irish Sea | 59 | 52 | 56 | -4 | 8.0 | - | |
| 6 | Born A Star | 72 | 64 | 69 | -5 | 8.0 | - | |
| 7 | Meeneera | 66 | 52 | 70 | -18 | 5.0 | - | |
| 8 | Fearless Kitty | 68 | 67 | 65 | +2 | 8.0 | - | |
| 9 | Global Ash | 63 | 61 | 67 | -6 | 5.0 | - | |
| 10 | Raisetheredlantern | 60 | 64 | 64 | ✓ Match | 5.0 | - | |
| 11 | Absolu Noir | 63 | 50 | 77 | -27 | 0.0 | - | |
| 12 | Wangan Midnight | 59 | 57 | 63 | -6 | 5.0 | - | |
| 13 | Great Melody | 63 | 79 | 60 | +19 | 8.0 | - | |
| 14 | Saipan | 56 | 52 | 70 | -18 | 0.0 | - | |
| 15 | Head Gardener | 60 | 66 | 57 | +9 | 8.0 | - | |
| 16 | Knave Of Diamonds | 64 | 57 | 61 | -4 | 8.0 | - | |
| 99 | Different Drum | - | 47 | 56 | -9 | 8.0 | - |
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