Official NHA Assessment

Race 5: RACEHORSE OWNERS ASSOCIATION HYBRID STAKES (Open)

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Line Horse
My Bestie
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 7
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    Speed Machine        4    60.0    1    0.00     0.5   107   105          105   -2
2    My Bestie            7    57.0    2    6.25     0.0   100   100          100   +0
3    Captain Of Stealth   5    60.0    3    7.50     0.0   107   106          106   -1
4    Seventh Gear         5    59.5    4    8.00     0.0   105   105          105   +0
5    Worlds Your Oyster   5    57.5    5    11.25    0.0   101   101          101   +0
6    Hyde Park            4    56.5    6    29.75    0.5   99    98           98    -1
99   Rockin' Ringo        6    58.5    99   0.00     0.0   -     103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Speed Machine 107 104 105 -1 0.5 -
2 My Bestie Line 100 61 100 -39 0.0
3 Captain Of Stealth 107 100 106 -6 0.0 -
4 Seventh Gear 105 99 105 -6 0.0 -
5 Worlds Your Oyster 101 95 101 -6 0.0 -
6 Hyde Park 99 95 98 -3 0.5 -
99 Rockin' Ringo - 107 103 +4 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