Official NHA Assessment
Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)
Line Horse
City Lights
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Oxalis Gold 3 56.0 1 0.00 2.0 - 53 6 +6 2 The Crown 3 60.0 2 0.25 2.0 - 61 61 +61 3 City Lights 4 60.0 3 2.00 0.5 67 67 67 +0 4 Messalina 3 54.5 4 3.00 2.0 - 52 52 +52 5 Twostep Queen 2 56.0 5 3.50 0.0 - 58 58 +58 6 Rainbow River 3 60.0 6 3.75 2.0 72 62 62 -10 7 Spirit In The Wind 4 60.0 7 4.00 0.5 63 65 65 +2 8 Berriesofthestraw 3 60.0 8 21.75 2.0 - 61 61 +61 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Oxalis Gold | - | 107 | 6 | +101 | 2.0 | - | |
| 2 | The Crown | - | 70 | 61 | +9 | 2.0 | - | |
| 3 | City Lights Line | 67 | 52 | 67 | -15 | 0.5 | ||
| 4 | Messalina | - | 71 | 52 | +19 | 2.0 | - | |
| 5 | Twostep Queen | - | 101 | 58 | +43 | 0.0 | - | |
| 6 | Rainbow River | 72 | 66 | 62 | +4 | 2.0 | - | |
| 7 | Spirit In The Wind | 63 | 60 | 65 | -5 | 0.5 | - | |
| 8 | Berriesofthestraw | - | 34 | 61 | -27 | 2.0 | - |
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