Official NHA Assessment
Race 3: WWW.TAB4RACING.COM MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)
Line Horse
Gimme A Diamond
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
10 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Vitellius 5 60.0 1 0.00 0.0 - 70 6 +6 2 Stepping Out 2 60.0 2 1.50 0.0 72 73 73 +1 3 Gimme A Diamond 2 60.0 3 2.75 0.0 72 72 72 +0 4 American Biscuit 3 60.0 4 4.25 4.0 - 63 63 +63 5 Kanimambo 5 60.0 5 5.75 0.0 - 70 70 +70 6 Miss Christmas 3 57.0 6 6.00 4.0 - 56 56 +56 7 Lord Nelson 3 60.0 7 6.50 4.0 - 62 62 +62 8 Marquez 3 60.0 8 7.75 4.0 - 62 62 +62 9 Labrausco 2 56.0 9 8.25 0.0 58 62 62 +4 10 A Place In The Sun 5 57.0 10 9.50 0.0 - 64 64 +64 11 World Heritage 2 57.0 11 11.50 0.0 65 64 64 -1 12 Big Dreamer 2 60.0 12 12.75 0.0 52 70 70 +18 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Vitellius | - | 73 | 6 | +67 | 0.0 | - | |
| 2 | Stepping Out | 72 | 74 | 73 | +1 | 0.0 | - | |
| 3 | Gimme A Diamond Line | 72 | 54 | 72 | -18 | 0.0 | ||
| 4 | American Biscuit | - | 65 | 63 | +2 | 4.0 | - | |
| 5 | Kanimambo | - | 59 | 70 | -11 | 0.0 | - | |
| 6 | Miss Christmas | - | 64 | 56 | +8 | 4.0 | - | |
| 7 | Lord Nelson | - | 55 | 62 | -7 | 4.0 | - | |
| 8 | Marquez | - | 69 | 62 | +7 | 4.0 | - | |
| 9 | Labrausco | 58 | 70 | 62 | +8 | 0.0 | - | |
| 10 | A Place In The Sun | - | 74 | 64 | +10 | 0.0 | - | |
| 11 | World Heritage | 65 | 55 | 64 | -9 | 0.0 | - | |
| 12 | Big Dreamer | 52 | 52 | 70 | -18 | 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