Official NHA Assessment

Race 5: BOOK FOR JULY DAY IN JOZI 0116811796 MR 66 HANDICAP (Open)

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Line Horse
Sparkling Jubilee
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
2 / 10
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    Sparkling Jubilee    5    62.0    1    0.00     0.0   70    70           70    +0
2    Fifth Of July        5    60.0    2    0.10     0.0   66    66           66    +0
3    Eiger Sanction       3    60.0    3    1.30     1.5   69    66           66    -3
4    Guardia Regine       3    59.0    4    1.50     1.5   72    64           64    -8
5    Flag Bearer          3    58.5    5    4.75     1.5   63    60           60    -3
6    Dark Tide            5    55.0    6    7.50     0.0   56    56           56    +0
7    Guerilla Warfare     3    58.5    7    12.50    1.5   84    60           74    -10
8    Full Go              6    55.0    8    13.25    0.0   56    56           56    +0
9    Mescal               2    59.0    9    99.99    0.0   64    64           64    +0
99   Circus Lights        5    61.0    99   0.00     0.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sparkling Jubilee Line 70 76 70 +6 0.0
2 Fifth Of July 66 63 66 -3 0.0 -
3 Eiger Sanction 69 79 66 +13 1.5 -
4 Guardia Regine 72 67 64 +3 1.5 -
5 Flag Bearer 63 60 60 ✓ Match 1.5 -
6 Dark Tide 56 53 56 -3 0.0 -
7 Guerilla Warfare 84 75 74 +1 1.5 -
8 Full Go 56 59 56 +3 0.0 -
9 Mescal 64 64 64 ✓ Match 0.0 -
99 Circus Lights - 64 68 -4 0.0 -
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