Official NHA Assessment
Race 4: OPEN A tabGOLD ACCOUNT - 031 314 1874 MR 84 HANDICAP (Open)
Line Horse
Electric Surge
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
7 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Chewbaca 5 55.5 1 0.00 0.0 75 71 75 +0 2 Great Affair 7 58.5 2 1.40 0.0 82 82 82 +0 3 Electric Surge 5 55.0 3 2.40 0.0 74 74 74 +0 4 Space News 4 52.0 4 4.30 1.5 72 62 62 -10 5 Billy Bazooka 3 48.0 5 4.70 4.5 75 48 65 -10 6 Querari's Cowboy 5 50.5 6 8.20 0.0 73 61 63 -10 7 Twice Golden 5 48.0 7 9.30 0.0 60 56 56 -4 8 A Whole New World 4 53.0 8 15.20 1.5 71 63 63 -8 9 Extract 3 52.0 9 17.70 4.5 65 55 55 -10 10 The Kop 4 60.0 10 30.00 1.5 85 77 77 -8 11 Mystery Boy 4 57.5 11 34.30 1.5 80 72 72 -8 99 Rex Union 4 57.5 99 0.00 1.5 - 72 72 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Chewbaca | 75 | 87 | 75 | +12 | 0.0 | - | |
| 2 | Great Affair | 82 | 63 | 82 | -19 | 0.0 | - | |
| 3 | Electric Surge Line | 74 | 83 | 74 | +9 | 0.0 | ||
| 4 | Space News | 72 | 52 | 62 | -10 | 1.5 | - | |
| 5 | Billy Bazooka | 75 | 62 | 65 | -3 | 4.5 | - | |
| 6 | Querari's Cowboy | 73 | 62 | 63 | -1 | 0.0 | - | |
| 7 | Twice Golden | 60 | 84 | 56 | +28 | 0.0 | - | |
| 8 | A Whole New World | 71 | 65 | 63 | +2 | 1.5 | - | |
| 9 | Extract | 65 | 60 | 55 | +5 | 4.5 | - | |
| 10 | The Kop | 85 | 78 | 77 | +1 | 1.5 | - | |
| 11 | Mystery Boy | 80 | 80 | 72 | +8 | 1.5 | - | |
| 99 | Rex Union | - | 97 | 72 | +25 | 1.5 | - |
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