Official NHA Assessment

Race 5: GENEVIEVE MICHEL MR 74 HANDICAP (Open)

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Line Horse
Banha Bridge
Reference for assessment
Exact Matches
1 / 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    The Brief            3    60.5    1    0.00     10.0  77    48           77    +0
2    Pottinger            3    57.0    2    0.40     10.0  70    48           60    -10
3    Banha Bridge         5    56.0    3    0.45     0.0   66    66           66    +0
4    Immeasurable         5    60.0    4    2.00     0.0   74    72           72    -2
5    Jackman              8    52.0    5    11.00    0.0   40    51           51    +11
6    August Leaves        5    56.0    6    11.50    0.0   66    59           59    -7
99   Kool Baikal          5    58.0    99   0.00     0.0   -     63           63    +0
99   Leshawes             3    58.5    99   0.00     10.0  -     44           44    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Brief 77 90 77 +13 10.0 -
2 Pottinger 70 70 60 +10 10.0 -
3 Banha Bridge Line 66 70 66 +4 0.0
4 Immeasurable 74 72 72 ✓ Match 0.0 -
5 Jackman 40 40 51 -11 0.0 -
6 August Leaves 66 60 59 +1 0.0 -
99 Kool Baikal - 67 63 +4 0.0 -
99 Leshawes - 73 44 +29 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