Official NHA Assessment
Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)
Line Horse
Oklahoma Twister
Reference for assessment
Exact Matches
3 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
8 / 14
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Guardia Regine 3 60.0 1 0.00 4.0 74 67 67 -7 2 Breath Of Magic 4 60.0 2 1.30 2.0 72 74 74 +2 3 Monte Bello 3 60.0 3 1.60 4.0 - 70 70 +70 4 Oklahoma Twister 4 60.0 4 4.80 2.0 71 71 71 +0 5 Highveld Storm 3 60.0 5 7.20 4.0 - 67 67 +67 6 Galladorn 2 60.0 6 9.50 0.0 75 75 75 +0 7 Phala Millions 4 60.0 7 10.75 2.0 70 71 71 +1 8 Pomo Clapper 2 60.0 8 17.00 0.0 63 75 75 +12 9 Isiqalaba 3 60.0 9 20.50 4.0 - 67 67 +67 10 Battle Of Gergovia 3 60.0 10 20.75 4.0 49 67 67 +18 11 Cayenne Pepper 3 60.0 11 23.00 4.0 42 67 67 +25 12 Royal Albert 3 60.0 12 33.75 4.0 54 67 67 +13 13 Duke Of Argyll 3 60.0 13 99.99 4.0 - 67 67 +67 99 Grande Orso 3 60.0 99 0.00 4.0 - 67 67 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Guardia Regine | 74 | 67 | 67 | ✓ Match | 4.0 | - | |
| 2 | Breath Of Magic | 72 | 60 | 74 | -14 | 2.0 | - | |
| 3 | Monte Bello | - | 65 | 70 | -5 | 4.0 | - | |
| 4 | Oklahoma Twister Line | 71 | 71 | 71 | ✓ Match | 2.0 | ||
| 5 | Highveld Storm | - | 66 | 67 | -1 | 4.0 | - | |
| 6 | Galladorn | 75 | 75 | 75 | ✓ Match | 0.0 | - | |
| 7 | Phala Millions | 70 | 66 | 71 | -5 | 2.0 | - | |
| 8 | Pomo Clapper | 63 | 68 | 75 | -7 | 0.0 | - | |
| 9 | Isiqalaba | - | 55 | 67 | -12 | 4.0 | - | |
| 10 | Battle Of Gergovia | 49 | 45 | 67 | -22 | 4.0 | - | |
| 11 | Cayenne Pepper | 42 | 39 | 67 | -28 | 4.0 | - | |
| 12 | Royal Albert | 54 | 56 | 67 | -11 | 4.0 | - | |
| 13 | Duke Of Argyll | - | 10 | 67 | -57 | 4.0 | - | |
| 99 | Grande Orso | - | - | 67 | -67 | 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