Official NHA Assessment

Race 6: OPEN A TABGOLD ACCOUNT - 031 314 1874 MAIDEN PLATE (For all Maidens)

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Line Horse
Green Mile
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
4 / 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    Ragnar The King      3    60.0    1    0.00     4.0   77    66           66    -11
2    O Space O            2    60.0    2    0.80     0.0   -     78           78    +78
3    Green Mile           4    60.0    3    4.10     2.0   71    71           71    +0
4    Off The Charts       2    56.0    4    7.10     0.0   61    66           66    +5
5    The Iron Duke        3    58.5    5    9.10     4.0   -     63           63    +63
6    Fern Hill            3    60.0    6    9.50     4.0   64    66           66    +2
7    Parliament Square    3    60.0    7    9.60     4.0   -     66           66    +66
8    Vila Vicosa          3    60.0    8    10.80    4.0   69    66           66    -3
9    Prince Florian       3    60.0    9    11.10    4.0   75    66           66    -9
10   White Waters         2    57.0    10   11.20    0.0   78    68           68    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ragnar The King 77 66 66 ✓ Match 4.0 -
2 O Space O - 59 78 -19 0.0 -
3 Green Mile Line 71 66 71 -5 2.0
4 Off The Charts 61 65 66 -1 0.0 -
5 The Iron Duke - 64 63 +1 4.0 -
6 Fern Hill 64 63 66 -3 4.0 -
7 Parliament Square - 53 66 -13 4.0 -
8 Vila Vicosa 69 74 66 +8 4.0 -
9 Prince Florian 75 73 66 +7 4.0 -
10 White Waters 78 73 68 +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