Official NHA Assessment

Race 5: WSB Aviator takes off FM 82 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Bosnay
Reference for assessment
Exact Matches
3 / 15
Calculated = Official
Close Matches
5 / 15
Within 2 points
Significant Diffs
5 / 15
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    Mascherina           4    57.5    1    0.00     0.5   81    78           81    +0
2    Diana The Huntress   3    55.5    2    1.70     2.0   73    74           74    +1
3    Bosnay               4    58.0    3    1.95     0.5   82    82           82    +0
4    Jazz Cafe            3    58.0    4    3.45     2.0   82    77           77    -5
5    Gardenia             5    57.5    5    3.50     0.0   77    80           80    +3
6    Aspoestertjie        5    55.5    6    4.10     0.0   73    76           76    +3
7    Nightingales Sing    3    60.0    7    5.10     2.0   86    80           80    -6
8    Lady Lacewing        2    56.0    8    5.15     0.0   78    76           76    -2
9    Capetown Beauty      3    60.0    9    5.35     2.0   82    80           80    -2
10   My Lady Soul         4    60.0    10   5.65     0.5   89    83           83    -6
11   Sea Goddess          3    60.0    11   6.75     2.0   82    80           80    -2
12   Chichicastenango     3    56.5    12   7.05     2.0   79    73           73    -6
13   Colorado Creek       4    57.5    13   7.45     0.5   81    78           78    -3
14   Bitcoin Baby         2    57.5    14   10.15    0.0   81    79           79    -2
99   Kisshoten            3    57.0    99   0.00     2.0   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mascherina 81 99 81 +18 0.5 -
2 Diana The Huntress 73 74 74 ✓ Match 2.0 -
3 Bosnay Line 82 74 82 -8 0.5
4 Jazz Cafe 82 82 77 +5 2.0 -
5 Gardenia 77 75 80 -5 0.0 -
6 Aspoestertjie 73 68 76 -8 0.0 -
7 Nightingales Sing 86 79 80 -1 2.0 -
8 Lady Lacewing 78 58 76 -18 0.0 -
9 Capetown Beauty 82 76 80 -4 2.0 -
10 My Lady Soul 89 86 83 +3 0.5 -
11 Sea Goddess 82 80 80 ✓ Match 2.0 -
12 Chichicastenango 79 76 73 +3 2.0 -
13 Colorado Creek 81 80 78 +2 0.5 -
14 Bitcoin Baby 81 79 79 ✓ Match 0.0 -
99 Kisshoten - 107 74 +33 2.0 -
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