Official NHA Assessment

Race 6: STITCH CLASS 3 (Open. Benchmark at 60.0kg = 96)

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Line Horse
Dumbledore
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Kaiboy               2    59.0    1    0.00     4.0   102   100          100   -2
2    Dumbledore           4    59.0    2    0.75     7.0   94    94           94    +0
3    Riverstone           2    56.5    3    3.00     4.0   89    95           95    +6
4    War Chariot          4    53.5    4    4.25     7.0   83    83           83    +0
5    Nordic Chief         4    59.0    5    6.00     7.0   94    94           94    +0
6    Speed Racer          4    57.5    6    7.75     7.0   91    91           91    +0
7    Dean Street          3    60.5    7    8.05     6.0   97    99           99    +2
8    Mojo Man             4    58.0    8    8.55     7.0   92    92           92    +0
9    Escarpment           4    55.0    9    8.60     7.0   86    86           86    +0
10   Surge Of Power       2    56.5    10   11.35    4.0   97    95           95    -2
11   Handsome Prince      2    57.0    11   17.10    4.0   98    96           96    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kaiboy 102 108 100 +8 4.0 -
2 Dumbledore Line 94 105 94 +11 7.0
3 Riverstone 89 84 95 -11 4.0 -
4 War Chariot 83 82 83 -1 7.0 -
5 Nordic Chief 94 94 94 ✓ Match 7.0 -
6 Speed Racer 91 88 91 -3 7.0 -
7 Dean Street 97 102 99 +3 6.0 -
8 Mojo Man 92 80 92 -12 7.0 -
9 Escarpment 86 79 86 -7 7.0 -
10 Surge Of Power 97 80 95 -15 4.0 -
11 Handsome Prince 98 91 96 -5 4.0 -
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