Official NHA Assessment
Race 5: JOIN THE IPITOMBE 100 CLUB MIDDLE STAKES (For horses with nett rating of 92 and below)
Line Horse
Empire Blue
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
5 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Last One Standing 3 60.0 1 0.00 3.0 88 84 84 -4 2 Citrusdal 8 60.0 2 6.00 0.0 91 90 90 -1 3 Empire Blue 4 58.0 3 7.50 1.0 84 84 84 +0 4 Zazu 6 54.5 4 12.50 0.0 83 79 79 -4 5 Admirals Chance 5 58.0 5 99.00 0.0 87 86 86 -1 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Last One Standing | 88 | 93 | 84 | +9 | 3.0 | - | |
| 2 | Citrusdal | 91 | 81 | 90 | -9 | 0.0 | - | |
| 3 | Empire Blue Line | 84 | 71 | 84 | -13 | 1.0 | ||
| 4 | Zazu | 83 | 71 | 79 | -8 | 0.0 | - | |
| 5 | Admirals Chance | 87 | 77 | 86 | -9 | 0.0 | - |
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