Official NHA Assessment
Race 3: STITCH MAIDEN PLATE (For all Maidens)
Line Horse
Tunguska
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
3 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Tunguska 3 60.0 1 0.00 5.0 69 69 69 +0 2 Spanish Verse 3 60.0 2 2.00 5.0 73 72 72 -1 3 Vixens War 2 56.5 3 4.50 0.0 69 72 72 +3 4 Frequent Traveller 3 60.0 4 4.80 5.0 76 69 69 -7 5 I Am Sam 3 60.0 5 5.55 5.0 73 69 69 -4 6 Whatwillbewillbe 3 60.0 6 5.75 5.0 72 69 69 -3 7 Phantom Man 4 60.0 7 6.15 2.5 71 74 74 +3 8 Quiet Place 3 60.0 8 6.55 5.0 72 69 69 -3 9 Ain't No Sunshine 3 60.0 9 8.80 5.0 67 69 69 +2 10 Inquisitor 2 60.0 10 9.10 0.0 71 79 79 +8 99 Royal Influencer 3 60.0 99 0.00 5.0 - 69 69 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Tunguska Line | 69 | 69 | 69 | ✓ Match | 5.0 | ||
| 2 | Spanish Verse | 73 | 75 | 72 | +3 | 5.0 | - | |
| 3 | Vixens War | 69 | 69 | 72 | -3 | 0.0 | - | |
| 4 | Frequent Traveller | 76 | 72 | 69 | +3 | 5.0 | - | |
| 5 | I Am Sam | 73 | 70 | 69 | +1 | 5.0 | - | |
| 6 | Whatwillbewillbe | 72 | 71 | 69 | +2 | 5.0 | - | |
| 7 | Phantom Man | 71 | 71 | 74 | -3 | 2.5 | - | |
| 8 | Quiet Place | 72 | 73 | 69 | +4 | 5.0 | - | |
| 9 | Ain't No Sunshine | 67 | 62 | 69 | -7 | 5.0 | - | |
| 10 | Inquisitor | 71 | 69 | 79 | -10 | 0.0 | - | |
| 99 | Royal Influencer | - | 75 | 69 | +6 | 5.0 | - |
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