Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY OPEN MAIDEN (For all Maidens)

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Line Horse
Grey Warrior
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
2 / 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    Welsh Starlet        3    48.0    1    0.00     8.0   53    35           35    -18
2    Grey Warrior         2    56.0    2    2.25     0.0   72    72           72    +0
3    Mont Tremblant       3    56.5    3    5.75     8.0   59    52           52    -7
4    Two For The Boys     3    57.0    4    7.75     8.0   68    53           58    -10
5    Pick A Pomodoro      2    58.0    5    14.00    0.0   76    71           71    -5
6    Fort Impreza         3    57.0    6    15.50    8.0   60    53           53    -7
7    Bugle                2    55.5    7    20.25    0.0   71    66           66    -5
8    Free To Run          2    52.0    8    29.50    0.0   68    59           59    -9
9    Nuclear Power        2    48.5    9    99.99    0.0   65    52           55    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Welsh Starlet 53 63 35 +28 8.0 -
2 Grey Warrior Line 72 70 72 -2 0.0
3 Mont Tremblant 59 56 52 +4 8.0 -
4 Two For The Boys 68 61 58 +3 8.0 -
5 Pick A Pomodoro 76 67 71 -4 0.0 -
6 Fort Impreza 60 56 53 +3 8.0 -
7 Bugle 71 65 66 -1 0.0 -
8 Free To Run 68 68 59 +9 0.0 -
9 Nuclear Power 65 60 55 +5 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