Official NHA Assessment
Race 4: JOIN THE ZIMFUN RACING CLUB FOR $100 MERIT RATED 80 HANDICAP F&M (Open)
Line Horse
Coffeeberry
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
2 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Walking Thru Time 3 54.0 1 0.00 2.0 68 62 68 +0 2 My Secret Place 5 56.0 2 0.75 0.0 72 74 74 +2 3 Coffeeberry 5 60.0 3 3.25 0.0 80 80 80 +0 4 Zazu 6 56.5 4 11.25 0.0 73 71 71 -2 99 Tigers Eagle 3 59.5 99 0.00 2.0 - 73 73 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Walking Thru Time | 68 | 73 | 68 | +5 | 2.0 | - | |
| 2 | My Secret Place | 72 | 71 | 74 | -3 | 0.0 | - | |
| 3 | Coffeeberry Line | 80 | 72 | 80 | -8 | 0.0 | ||
| 4 | Zazu | 73 | 71 | 71 | ✓ Match | 0.0 | - | |
| 99 | Tigers Eagle | - | 79 | 73 | +6 | 2.0 | - |
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