Official NHA Assessment
Race 6: 4RACING.TV WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)
Line Horse
On The Guest List
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 On The Guest List 2 60.0 1 0.00 0.0 68 68 68 +0 2 Impression 3 60.0 2 1.50 3.5 65 64 64 -1 3 Dame Colleen 3 60.0 3 2.25 3.5 54 64 64 +10 4 Coffee In Brazil 3 60.0 4 6.00 3.5 58 61 61 +3 5 Alabama Storm 2 60.0 5 6.50 0.0 49 68 68 +19 6 Flight De Grace 5 60.0 6 6.55 0.0 40 68 68 +28 7 Cilantro 3 60.0 7 6.75 3.5 58 61 61 +3 8 Apache Sunrise 3 60.0 8 99.99 3.5 - 61 61 +61 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | On The Guest List Line | 68 | 57 | 68 | -11 | 0.0 | ||
| 2 | Impression | 65 | 51 | 64 | -13 | 3.5 | - | |
| 3 | Dame Colleen | 54 | 46 | 64 | -18 | 3.5 | - | |
| 4 | Coffee In Brazil | 58 | 49 | 61 | -12 | 3.5 | - | |
| 5 | Alabama Storm | 49 | 47 | 68 | -21 | 0.0 | - | |
| 6 | Flight De Grace | 40 | 45 | 68 | -23 | 0.0 | - | |
| 7 | Cilantro | 58 | 54 | 61 | -7 | 3.5 | - | |
| 8 | Apache Sunrise | - | 10 | 61 | -51 | 3.5 | - |
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