Official NHA Assessment
Race 8: NEXT TURFFONTEIN RACEMEETING THURSDAY 30 OCTOBER MR 74 HANDICAP (Open)
Line Horse
Spy Story
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Xenophon 3 62.0 1 0.00 8.5 78 78 78 +0 2 Spy Story 3 58.5 2 1.20 8.5 71 71 71 +0 3 His Lordship 3 58.5 3 2.20 8.5 74 71 71 -3 4 Prized Platinum 3 60.0 4 5.50 8.5 74 74 74 +0 5 Pacific 4 52.0 5 7.25 10.0 54 55 55 +1 6 Legendary 2 60.0 6 12.00 5.5 74 80 80 +6 7 Across The Bow 3 52.0 7 17.50 8.5 57 58 58 +1 99 Bumps Last Grind 2 61.5 99 0.00 5.5 - 83 83 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Xenophon | 78 | 83 | 78 | +5 | 8.5 | - | |
| 2 | Spy Story Line | 71 | 66 | 71 | -5 | 8.5 | ||
| 3 | His Lordship | 74 | 85 | 71 | +14 | 8.5 | - | |
| 4 | Prized Platinum | 74 | 72 | 74 | -2 | 8.5 | - | |
| 5 | Pacific | 54 | 50 | 55 | -5 | 10.0 | - | |
| 6 | Legendary | 74 | 69 | 80 | -11 | 5.5 | - | |
| 7 | Across The Bow | 57 | 57 | 58 | -1 | 8.5 | - | |
| 99 | Bumps Last Grind | - | 75 | 83 | -8 | 5.5 | - |
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