Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING FRIDAY 27 JANUARY MR 82 HANDICAP (Open)

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Line Horse
Ancestral Prayer
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 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    Slings And Arrows    3    61.0    1    0.00     4.0   84    77           84    +0
2    Ancestral Prayer     4    57.5    2    1.25     2.5   77    77           77    +0
3    Acorn                2    56.0    3    2.50     0.0   83    77           77    -6
4    Daughter Of Zeus     4    57.0    4    2.60     2.5   76    74           74    -2
5    El Romiachi          8    55.5    5    4.35     0.0   72    74           74    +2
6    Life On Mars         4    61.0    6    4.45     2.5   84    80           80    -4
7    Storm Commander      5    57.5    7    5.20     0.0   77    78           78    +1
8    Kuznetsov            2    52.5    8    7.20     0.0   74    68           68    -6
9    Razor Red            3    52.0    9    7.45     4.0   66    59           59    -7
10   Royal Shindig        4    53.0    10   12.70    2.5   68    64           64    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Slings And Arrows 84 92 84 +8 4.0 -
2 Ancestral Prayer Line 77 79 77 +2 2.5
3 Acorn 83 89 77 +12 0.0 -
4 Daughter Of Zeus 76 82 74 +8 2.5 -
5 El Romiachi 72 77 74 +3 0.0 -
6 Life On Mars 84 87 80 +7 2.5 -
7 Storm Commander 77 74 78 -4 0.0 -
8 Kuznetsov 74 61 68 -7 0.0 -
9 Razor Red 66 63 59 +4 4.0 -
10 Royal Shindig 68 62 64 -2 2.5 -
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