Official NHA Assessment

Race 8: BETWAY PROGRESS PLATE (1,2 & 3 time winners)

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Line Horse
Sukhumvit
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    Barbaresco           4    61.0    1    0.00     6.0   120   115          115   -5
2    Mastership           2    61.0    2    2.50     0.0   93    129          129   +36
3    Sukhumvit            3    51.5    3    4.50     8.5   91    91           91    +0
4    United Council       5    57.0    4    5.75     0.0   93    119          119   +26
5    Copper Mist          2    55.0    5    9.50     0.0   82    115          115   +33
6    Quatermain           2    58.5    6    99.99    0.0   82    122          122   +40
99   Guy Gibson           2    58.0    99   0.00     0.0   -     121          121   +0
99   Professor Snape      2    57.0    99   0.00     0.0   -     119          119   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Barbaresco 120 116 115 +1 6.0 -
2 Mastership 93 105 129 -24 0.0 -
3 Sukhumvit Line 91 100 91 +9 8.5
4 United Council 93 100 119 -19 0.0 -
5 Copper Mist 82 62 115 -53 0.0 -
6 Quatermain 82 79 122 -43 0.0 -
99 Guy Gibson - 99 121 -22 0.0 -
99 Professor Snape - 68 119 -51 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