Official NHA Assessment

Race 5: MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Cutback
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    Cutback              6    57.0    1    0.00     0.0   62    62           62    +0
2    Ian's Ferrari        3    57.0    2    1.00     5.0   -     56           56    +56
3    Queen Of Dallas      3    53.0    3    3.50     5.0   -     45           45    +45
4    Karoo Winter         4    54.0    4    5.50     2.5   39    51           51    +12
5    Chetan               3    57.0    5    12.50    5.0   52    52           52    +0
6    Johnny Chifamba      3    60.0    6    15.50    5.0   39    58           58    +19
7    Gold Collection      3    60.0    7    20.50    5.0   59    58           58    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cutback Line 62 63 62 +1 0.0
2 Ian's Ferrari - 63 56 +7 5.0 -
3 Queen Of Dallas - 40 45 -5 5.0 -
4 Karoo Winter 39 56 51 +5 2.5 -
5 Chetan 52 45 52 -7 5.0 -
6 Johnny Chifamba 39 34 58 -24 5.0 -
7 Gold Collection 59 50 58 -8 5.0 -
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