Official NHA Assessment

Race 4: COMPUTAFORM ONLINE MAIDEN PLATE (For all Maidens)

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Line Horse
Pewter Sky
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
5 / 12
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    Motor City Hitman    3    60.0    1    0.00     5.0   70    69           69    -1
2    Leeson               3    60.0    2    3.25     5.0   72    71           71    -1
3    Pewter Sky           3    60.0    3    3.75     5.0   70    70           70    +0
4    Brief Crusade        3    60.0    4    5.50     5.0   64    69           69    +5
5    Blonde Act           3    60.0    5    8.00     5.0   75    69           69    -6
6    Cross Examiner       3    60.0    6    9.00     5.0   63    69           69    +6
7    Khaleesi's Gold      3    60.0    7    10.25    5.0   61    69           69    +8
8    Arabian Sky          3    53.0    8    12.25    5.0   68    55           58    -10
9    Amicus Curiae        3    57.0    9    15.00    5.0   -     63           63    +63
10   Rebels Gate          3    60.0    10   29.00    5.0   50    69           69    +19
99   Lemme Go             3    60.0    99   0.00     5.0   -     69           69    +0
99   Stolen Thunder       3    60.0    99   0.00     5.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Motor City Hitman 70 68 69 -1 5.0 -
2 Leeson 72 72 71 +1 5.0 -
3 Pewter Sky Line 70 71 70 +1 5.0
4 Brief Crusade 64 64 69 -5 5.0 -
5 Blonde Act 75 96 69 +27 5.0 -
6 Cross Examiner 63 50 69 -19 5.0 -
7 Khaleesi's Gold 61 52 69 -17 5.0 -
8 Arabian Sky 68 63 58 +5 5.0 -
9 Amicus Curiae - 59 63 -4 5.0 -
10 Rebels Gate 50 43 69 -26 5.0 -
99 Lemme Go - 54 69 -15 5.0 -
99 Stolen Thunder - 69 69 ✓ Match 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