Official NHA Assessment

Race 3: PLAY SOCCER 6, 10 AND 13 OPEN MAIDEN (For all Maidens)

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Line Horse
Sempre Bella
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
4 / 7
Within 2 points
Significant Diffs
2 / 7
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Cheap Thrills        4    54.5    1    0.00     7.0   51    55           55    +4
2    Outback Express      2    55.0    2    0.05     0.0   68    70           70    +2
3    Sempre Bella         3    56.0    3    2.05     10.0  57    57           57    +0
4    Prolific Star        3    60.0    4    2.55     10.0  67    64           64    -3
5    Welsh Starlet        3    54.5    5    2.65     10.0  57    53           53    -4
6    Zambezi Sunset       2    54.5    6    3.65     0.0   56    72           72    +16
7    Go Dancing           3    52.0    7    3.90     10.0  53    46           46    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cheap Thrills 51 56 55 +1 7.0 -
2 Outback Express 68 71 70 +1 0.0 -
3 Sempre Bella Line 57 56 57 -1 10.0
4 Prolific Star 67 64 64 ✓ Match 10.0 -
5 Welsh Starlet 57 63 53 +10 10.0 -
6 Zambezi Sunset 56 60 72 -12 0.0 -
7 Go Dancing 53 50 46 +4 10.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. 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