Official NHA Assessment
Race 10: BETWAY MR 80 HANDICAP (Open)
Line Horse
Chieftain
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
6 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 King Of Venus 4 60.5 1 0.00 9.0 81 88 81 +0 2 Chieftain 3 61.5 2 0.25 7.5 93 93 93 +0 3 Zanthar 3 53.0 3 1.00 7.5 84 76 76 -8 4 Arilena 6 54.0 4 2.25 0.0 72 93 93 +21 5 Gaelic Dancer 3 55.5 5 5.00 7.5 81 81 81 +0 6 Lovegrass 4 61.0 6 5.75 9.0 82 89 89 +7 7 Golden Chandelier 2 58.0 7 17.75 5.0 86 91 91 +5 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | King Of Venus | 81 | 87 | 81 | +6 | 9.0 | - | |
| 2 | Chieftain Line | 93 | 106 | 93 | +13 | 7.5 | ||
| 3 | Zanthar | 84 | 80 | 76 | +4 | 7.5 | - | |
| 4 | Arilena | 72 | 75 | 93 | -18 | 0.0 | - | |
| 5 | Gaelic Dancer | 81 | 64 | 81 | -17 | 7.5 | - | |
| 6 | Lovegrass | 82 | 96 | 89 | +7 | 9.0 | - | |
| 7 | Golden Chandelier | 86 | 82 | 91 | -9 | 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