Official NHA Assessment

Race 6: TRACK & BALL GAMING MR 70 HANDICAP (Open)

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Line Horse
Stanley
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 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    Capetown Affair      5    52.0    1    0.00     0.0   50    50           50    +0
2    Hallerbos            3    56.5    2    0.15     8.0   64    43           54    -10
3    Stanley              5    60.0    3    0.85     0.0   70    70           70    +0
4    Purple Operator      3    59.5    4    2.95     8.0   70    51           60    -10
5    Quiz Master          3    58.5    5    3.45     8.0   68    48           58    -10
6    Senor Garcia         3    58.5    6    5.95     8.0   68    47           58    -10
7    Leslies Pathtofame   7    57.5    7    6.55     0.0   65    61           61    -4
8    Gunsmoke             3    59.0    8    7.30     8.0   72    48           62    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Capetown Affair 50 59 50 +9 0.0 -
2 Hallerbos 64 57 54 +3 8.0 -
3 Stanley Line 70 67 70 -3 0.0
4 Purple Operator 70 74 60 +14 8.0 -
5 Quiz Master 68 60 58 +2 8.0 -
6 Senor Garcia 68 67 58 +9 8.0 -
7 Leslies Pathtofame 65 63 61 +2 0.0 -
8 Gunsmoke 72 68 62 +6 8.0 -
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