Official NHA Assessment
Race 4: PENBEV OPEN MAIDEN (F & M) (For all Fillies & Mares)
Line Horse
Spirit Guide
Reference for assessment
Exact Matches
1 / 16
Calculated = Official
Close Matches
2 / 16
Within 2 points
Significant Diffs
13 / 16
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 A Thousand Kisses 2 51.5 1 0.00 2.0 60 63 63 +3 2 Charlene 2 59.5 2 0.50 2.0 77 79 79 +2 3 Rocking Peonie 3 55.0 3 0.80 3.0 66 68 68 +2 4 Spirit Guide 3 57.0 4 1.20 3.0 72 72 72 +0 5 Jet Green 4 52.0 5 3.45 3.5 60 61 61 +1 6 Opera Verse 4 53.5 6 3.85 3.5 65 64 64 -1 7 True Horizon 4 51.5 7 3.90 3.5 58 60 60 +2 8 Cotonou 3 52.0 8 4.10 3.0 58 62 62 +4 9 Becky Sharp 4 60.0 9 5.60 3.5 - 77 77 +77 10 Shout At The Moon 3 52.0 10 6.10 3.0 57 62 62 +5 11 Greedanddesire 4 51.5 11 6.30 3.5 52 60 60 +8 12 Future Star 2 60.0 12 8.05 2.0 - 80 80 +80 13 Stealingthethunder 2 52.0 13 12.30 2.0 60 64 64 +4 14 Chakpori 3 57.0 14 15.55 3.0 - 72 72 +72 15 Black Hole Sun 4 52.5 15 27.55 3.5 48 62 62 +14 99 Only Red 3 51.5 99 0.00 3.0 - 61 61 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | A Thousand Kisses | 60 | 54 | 63 | -9 | 2.0 | - | |
| 2 | Charlene | 77 | 78 | 79 | -1 | 2.0 | - | |
| 3 | Rocking Peonie | 66 | 63 | 68 | -5 | 3.0 | - | |
| 4 | Spirit Guide Line | 72 | 63 | 72 | -9 | 3.0 | ||
| 5 | Jet Green | 60 | 54 | 61 | -7 | 3.5 | - | |
| 6 | Opera Verse | 65 | 50 | 64 | -14 | 3.5 | - | |
| 7 | True Horizon | 58 | 60 | 60 | ✓ Match | 3.5 | - | |
| 8 | Cotonou | 58 | 56 | 62 | -6 | 3.0 | - | |
| 9 | Becky Sharp | - | 68 | 77 | -9 | 3.5 | - | |
| 10 | Shout At The Moon | 57 | 45 | 62 | -17 | 3.0 | - | |
| 11 | Greedanddesire | 52 | 50 | 60 | -10 | 3.5 | - | |
| 12 | Future Star | - | 64 | 80 | -16 | 2.0 | - | |
| 13 | Stealingthethunder | 60 | 47 | 64 | -17 | 2.0 | - | |
| 14 | Chakpori | - | 64 | 72 | -8 | 3.0 | - | |
| 15 | Black Hole Sun | 48 | 53 | 62 | -9 | 3.5 | - | |
| 99 | Only Red | - | 44 | 61 | -17 | 3.0 | - |
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