Official NHA Assessment

Race 4: WINTER SPRINT (For All Horses)

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Line Horse
Speed Machine
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 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    Silver Falcon        6    57.0    1    0.00     0.0   104   109          109   +5
2    Barzalona            6    52.5    2    1.50     0.0   95    100          100   +5
3    Speed Machine        4    61.5    3    1.70     2.5   113   113          113   +0
3    Sachdev              5    55.5    3    1.70     0.0   103   106          106   +3
5    Bereave              4    61.5    5    2.00     2.5   120   113          113   -7
6    Mr Cobbs             5    58.5    6    5.25     0.0   107   112          112   +5
7    Resonate             3    61.5    7    6.25     2.0   115   114          114   -1
8    Mufasa               6    54.5    8    13.25    0.0   99    104          104   +5
99   Gem King             6    57.0    99   0.00     0.0   -     109          109   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Falcon 104 106 109 -3 0.0 -
2 Barzalona 95 66 100 -34 0.0 -
3 Speed Machine Line 113 104 113 -9 2.5
3 Sachdev 103 101 106 -5 0.0 -
5 Bereave 120 111 113 -2 2.5 -
6 Mr Cobbs 107 106 112 -6 0.0 -
7 Resonate 115 103 114 -11 2.0 -
8 Mufasa 99 98 104 -6 0.0 -
99 Gem King - 108 109 -1 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