Official NHA Assessment

Race 5: CHOICE CARRIERS CLASS 4 (Open. Benchmark at 60.0kg = 82)

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Line Horse
Baton Rouge
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 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    Coco's Hero          2    54.5    1    0.00     0.0   86    75           75    -11
2    Baton Rouge          4    56.0    2    1.00     5.0   72    72           72    +0
3    Ariovistus           3    58.0    3    1.40     9.0   77    67           67    -10
4    Repetition           3    55.5    4    1.80     9.0   73    62           63    -10
5    Kebonalesedi         5    54.5    5    2.00     0.0   69    78           78    +9
6    Gurkha               3    60.0    6    3.25     9.0   82    70           72    -10
7    Noble Hero           3    56.5    7    3.75     9.0   75    62           65    -10
99   Future Free          2    55.5    99   0.00     0.0   -     77           77    +0
99   Better Man           2    58.5    99   0.00     0.0   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coco's Hero 86 96 75 +21 0.0 -
2 Baton Rouge Line 72 69 72 -3 5.0
3 Ariovistus 77 80 67 +13 9.0 -
4 Repetition 73 74 63 +11 9.0 -
5 Kebonalesedi 69 67 78 -11 0.0 -
6 Gurkha 82 80 72 +8 9.0 -
7 Noble Hero 75 78 65 +13 9.0 -
99 Future Free - 89 77 +12 0.0 -
99 Better Man - 104 83 +21 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