Official NHA Assessment

Race 3: RACEHORSE OWNERS ASSOCIATION MR 74 HANDICAP (Open)

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Line Horse
Meetatthewindsor
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
2 / 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    Explosive Speed      2    58.0    1    0.00     0.0   70    67           70    +0
2    Master Forester      3    58.0    2    0.25     4.0   79    59           69    -10
3    Meetatthewindsor     5    59.5    3    1.50     0.0   73    73           73    +0
4    Silver Tycoon        7    60.0    4    3.50     0.0   74    72           72    -2
5    King's Sailor        3    56.0    5    6.75     4.0   75    55           65    -10
6    Absolu Noir          8    52.0    6    7.25     0.0   52    55           55    +3
99   Guarding The Wall    4    54.0    99   0.00     2.5   -     54           54    +0
99   French Impact        2    60.5    99   0.00     0.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Explosive Speed 70 68 70 -2 0.0 -
2 Master Forester 79 90 69 +21 4.0 -
3 Meetatthewindsor Line 73 76 73 +3 0.0
4 Silver Tycoon 74 74 72 +2 0.0 -
5 King's Sailor 75 67 65 +2 4.0 -
6 Absolu Noir 52 50 55 -5 0.0 -
99 Guarding The Wall - 67 54 +13 2.5 -
99 French Impact - 72 72 ✓ Match 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