Official NHA Assessment

Race 4: BET WITH TAB CLASS 4 (F & M) (For F & M. Benchmark at 60.0kg = 77)

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Line Horse
Zippy Over
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Supreme Dream        3    55.5    1    0.00     4.5   77    64           64    -13
2    Peut Etre Moi        3    57.5    2    0.30     4.5   72    75           75    +3
3    Estimated            3    56.5    3    2.55     4.5   79    70           70    -9
4    Zippy Over           3    60.0    4    2.65     4.5   77    77           77    +0
5    Summer Night City    5    52.0    5    2.95     0.0   68    69           69    +1
6    Everglades           3    53.5    6    4.20     4.5   64    62           62    -2
7    Soft Touch           2    53.5    7    4.60     0.0   73    70           70    -3
8    Destined To Dance    3    52.0    8    5.35     4.5   55    57           57    +2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Supreme Dream 77 83 64 +19 4.5 -
2 Peut Etre Moi 72 68 75 -7 4.5 -
3 Estimated 79 70 70 ✓ Match 4.5 -
4 Zippy Over Line 77 78 77 +1 4.5
5 Summer Night City 68 57 69 -12 0.0 -
6 Everglades 64 65 62 +3 4.5 -
7 Soft Touch 73 54 70 -16 0.0 -
8 Destined To Dance 55 48 57 -9 4.5 -
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