Official NHA Assessment

Race 7: GALLOP TV YOUTUBE CHANNEL MR 68 HANDICAP (Open)

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Line Horse
Buster Keaton
Reference for assessment
Exact Matches
2 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
5 / 8
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    Fire Tonic           3    62.0    1    0.00     10.5  72    72           72    +0
2    Happy Wanderer       5    52.5    2    0.40     0.0   61    74           74    +13
3    Buster Keaton        3    56.0    3    0.80     10.5  60    60           60    +0
4    Cotton Ron           6    57.0    4    1.85     0.0   62    83           83    +21
5    El Draque            5    62.0    5    3.05     0.0   72    93           93    +21
6    Brave Voyager        3    55.5    6    3.80     10.5  62    59           59    -3
7    Mount Meru           4    52.0    7    5.10     12.0  50    49           49    -1
99   Mac Hardy            4    55.5    99   0.00     12.0  -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fire Tonic 72 72 72 ✓ Match 10.5 -
2 Happy Wanderer 61 55 74 -19 0.0 -
3 Buster Keaton Line 60 60 60 ✓ Match 10.5
4 Cotton Ron 62 59 83 -24 0.0 -
5 El Draque 72 57 93 -36 0.0 -
6 Brave Voyager 62 51 59 -8 10.5 -
7 Mount Meru 50 50 49 +1 12.0 -
99 Mac Hardy - 64 56 +8 12.0 -
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