Official NHA Assessment

Race 2: ALL TO COME MAIDEN PLATE (For all Maidens)

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Line Horse
Joe Harman
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 10
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    Hikaru               4    57.5    1    0.00     2.5   61    54           54    -7
2    Joe Harman           4    60.0    2    0.25     2.5   59    59           59    +0
3    War Man              3    60.0    3    0.35     5.0   66    61           61    -5
4    Augusta Green        3    60.0    4    1.60     5.0   69    59           59    -10
5    Star Rider           4    60.0    5    3.85     2.5   50    61           61    +11
6    Arctic Advance       3    60.0    6    6.35     5.0   65    54           55    -10
7    Silvano'sbutterfly   3    56.5    7    7.60     5.0   50    47           47    -3
8    Nussply              5    58.5    8    8.85     0.0   48    61           61    +13
9    Khal Drogo           4    60.0    9    18.35    2.5   51    59           59    +8
10   All Swagger          3    60.0    10   28.10    5.0   59    54           54    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hikaru 61 61 54 +7 2.5 -
2 Joe Harman Line 59 54 59 -5 2.5
3 War Man 66 75 61 +14 5.0 -
4 Augusta Green 69 61 59 +2 5.0 -
5 Star Rider 50 51 61 -10 2.5 -
6 Arctic Advance 65 58 55 +3 5.0 -
7 Silvano'sbutterfly 50 45 47 -2 5.0 -
8 Nussply 48 45 61 -16 0.0 -
9 Khal Drogo 51 46 59 -13 2.5 -
10 All Swagger 59 54 54 ✓ 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