Official NHA Assessment
Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens)
Line Horse
Old Fashioned
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
9 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Queensland 2 56.5 1 0.00 5.0 74 65 65 -9 2 Rockabilly 3 57.5 2 2.00 7.5 - 62 62 +62 3 Old Fashioned 3 60.0 3 2.30 7.5 67 67 67 +0 4 Slender Silhouette 2 56.5 4 3.10 5.0 78 65 68 -10 5 My Dear Friend 2 56.5 5 4.60 5.0 72 65 65 -7 6 Second To Nunn 2 59.0 6 6.20 5.0 - 70 70 +70 7 Rock Music 2 59.0 7 6.30 5.0 - 70 70 +70 8 Forest Drum 3 58.5 8 11.10 7.5 48 64 64 +16 9 Sarsden Jet 3 56.5 9 14.60 7.5 - 60 60 +60 10 Gold Platina 2 59.0 10 19.60 5.0 61 70 70 +9 99 Princess Of All 3 54.0 99 0.00 7.5 - 55 55 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Queensland | 74 | 80 | 65 | +15 | 5.0 | - | |
| 2 | Rockabilly | - | 74 | 62 | +12 | 7.5 | - | |
| 3 | Old Fashioned Line | 67 | 76 | 67 | +9 | 7.5 | ||
| 4 | Slender Silhouette | 78 | 77 | 68 | +9 | 5.0 | - | |
| 5 | My Dear Friend | 72 | 77 | 65 | +12 | 5.0 | - | |
| 6 | Second To Nunn | - | 67 | 70 | -3 | 5.0 | - | |
| 7 | Rock Music | - | 75 | 70 | +5 | 5.0 | - | |
| 8 | Forest Drum | 48 | 48 | 64 | -16 | 7.5 | - | |
| 9 | Sarsden Jet | - | 46 | 60 | -14 | 7.5 | - | |
| 10 | Gold Platina | 61 | 58 | 70 | -12 | 5.0 | - | |
| 99 | Princess Of All | - | 73 | 55 | +18 | 7.5 | - |
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