Official NHA Assessment
Race 4: TAB MIDDLE STAKES (For horses with nett rating of 105 and below)
Line Horse
Biofarmer
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
8 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Cymric 3 58.0 1 0.00 3.5 101 95 95 -6 2 Bob's Your Uncle 5 54.5 2 0.20 0.0 88 95 95 +7 3 Night Bomber 4 56.0 3 0.60 4.0 91 90 90 -1 4 Biofarmer 4 58.0 4 1.90 4.0 94 94 94 +0 5 Passage Of Power 6 56.5 5 1.95 0.0 95 99 99 +4 6 Silver Tudor 5 58.0 6 2.00 0.0 96 102 102 +6 7 Callmewhenuneedme 4 58.5 7 3.25 4.0 101 95 95 -6 8 Halberdier 4 56.0 8 3.75 4.0 91 90 90 -1 9 Max The Magician 4 56.0 9 4.75 4.0 93 90 90 -3 10 Rollwiththepunches 6 56.0 10 6.50 0.0 92 98 98 +6 11 Tchaikovsky 6 51.0 11 7.70 0.0 81 88 88 +7 12 Just Be Lekker 4 60.5 12 7.80 4.0 103 99 99 -4 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Cymric | 101 | 99 | 95 | +4 | 3.5 | - | |
| 2 | Bob's Your Uncle | 88 | 103 | 95 | +8 | 0.0 | - | |
| 3 | Night Bomber | 91 | 96 | 90 | +6 | 4.0 | - | |
| 4 | Biofarmer Line | 94 | 78 | 94 | -16 | 4.0 | ||
| 5 | Passage Of Power | 95 | 76 | 99 | -23 | 0.0 | - | |
| 6 | Silver Tudor | 96 | 99 | 102 | -3 | 0.0 | - | |
| 7 | Callmewhenuneedme | 101 | 97 | 95 | +2 | 4.0 | - | |
| 8 | Halberdier | 91 | 83 | 90 | -7 | 4.0 | - | |
| 9 | Max The Magician | 93 | 95 | 90 | +5 | 4.0 | - | |
| 10 | Rollwiththepunches | 92 | 90 | 98 | -8 | 0.0 | - | |
| 11 | Tchaikovsky | 81 | 81 | 88 | -7 | 0.0 | - | |
| 12 | Just Be Lekker | 103 | 113 | 99 | +14 | 4.0 | - |
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