Official NHA Assessment
Race 6: GREYVILLE CONVENTION CENTRE C STAKES (For All Horses with a nett rating of 83 & below)
Line Horse
Trippi T
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
8 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Princess Hannah 4 61.5 1 0.00 6.0 79 75 75 -4 2 Rhythm 2 60.0 2 0.50 3.5 73 77 77 +4 3 Rugger Lover 2 59.0 3 2.60 3.5 77 75 75 -2 4 Trippi T 3 61.5 4 2.90 5.0 77 77 77 +0 5 Fine One 2 61.5 5 3.10 3.5 84 80 80 -4 6 B Fiftytwo 4 61.5 6 4.60 6.0 78 75 75 -3 7 Chara Sands 3 58.5 7 5.00 5.0 74 71 71 -3 8 Ultra Quick 6 60.0 8 6.10 0.0 74 84 84 +10 9 Griffin Park 4 60.0 9 6.40 6.0 74 72 72 -2 10 Ndaka 3 57.5 10 6.90 5.0 73 69 69 -4 11 Trafalgar Square 6 56.0 11 7.60 0.0 71 76 76 +5 99 HereInAfter 4 52.0 99 0.00 6.0 - 56 56 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Princess Hannah | 79 | 93 | 75 | +18 | 6.0 | - | |
| 2 | Rhythm | 73 | 67 | 77 | -10 | 3.5 | - | |
| 3 | Rugger Lover | 77 | 79 | 75 | +4 | 3.5 | - | |
| 4 | Trippi T Line | 77 | 75 | 77 | -2 | 5.0 | ||
| 5 | Fine One | 84 | 84 | 80 | +4 | 3.5 | - | |
| 6 | B Fiftytwo | 78 | 68 | 75 | -7 | 6.0 | - | |
| 7 | Chara Sands | 74 | 70 | 71 | -1 | 5.0 | - | |
| 8 | Ultra Quick | 74 | 71 | 84 | -13 | 0.0 | - | |
| 9 | Griffin Park | 74 | 58 | 72 | -14 | 6.0 | - | |
| 10 | Ndaka | 73 | 61 | 69 | -8 | 5.0 | - | |
| 11 | Trafalgar Square | 71 | 69 | 76 | -7 | 0.0 | - | |
| 99 | HereInAfter | - | 72 | 56 | +16 | 6.0 | - |
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