Official NHA Assessment

Race 3: 4RACING THANKS AND APPRICIATES VAN DER WESTHUIZEN RACING MAIDEN PLATE (3-year-old Fillies) (For Maiden 3-year-old Fillie

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Line Horse
Mocha Macaroon
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
9 / 9
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    Village Green        2    60.0    1    0.00     0.0   83    94           89    +6
2    Mocha Macaroon       4    60.0    2    0.25     7.0   80    80           80    +0
3    Crystal Maiden       4    60.0    3    1.50     7.0   -     83           83    +83
4    Villa Semaya         2    60.0    4    1.75     0.0   77    97           97    +20
5    Courageous           4    60.0    5    2.75     7.0   73    82           82    +9
6    Jj's Eagle           2    60.0    6    7.50     0.0   57    94           94    +37
7    Amber Mo             2    57.5    7    18.50    0.0   -     89           89    +89
99   Explosive Bond       4    58.5    99   0.00     7.0   -     77           77    +0
99   Dakota Cat           2    60.0    99   0.00     0.0   -     94           94    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Village Green 83 81 89 -8 0.0 -
2 Mocha Macaroon Line 80 72 80 -8 7.0
3 Crystal Maiden - 66 83 -17 7.0 -
4 Villa Semaya 77 59 97 -38 0.0 -
5 Courageous 73 62 82 -20 7.0 -
6 Jj's Eagle 57 57 94 -37 0.0 -
7 Amber Mo - 30 89 -59 0.0 -
99 Explosive Bond - 94 77 +17 7.0 -
99 Dakota Cat - 61 94 -33 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