Official NHA Assessment

Race 1: 4RACING MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Secret Chord
Reference for assessment
Exact Matches
0 / 18
Calculated = Official
Close Matches
0 / 18
Within 2 points
Significant Diffs
17 / 18
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    San Simon            3    60.0    1    0.00     8.5   -     82           6     +6
2    Dual Prophecy        3    60.0    2    0.75     8.5   -     82           82    +82
3    Mid Winter Wind      3    60.0    3    1.50     8.5   -     82           82    +82
4    Secret Chord         4    60.0    4    2.50     10.0  79    79           79    +0
5    Precipeace           3    60.0    5    2.75     8.5   -     82           82    +82
6    Two Miles West       3    60.0    6    3.25     8.5   -     82           82    +82
7    To The Rescue        4    58.5    7    8.50     10.0  -     76           76    +76
8    Justcantgetenough    2    60.0    8    9.50     5.5   78    88           88    +10
9    Hat Man              4    60.0    9    9.75     10.0  -     79           79    +79
10   Knockemstiff         2    60.0    10   9.80     5.5   77    88           88    +11
11   Mr Blue Flame        3    60.0    11   10.50    8.5   -     82           82    +82
12   Duke Of Oxford       3    56.0    12   11.50    8.5   -     74           74    +74
13   Thunderbird          4    58.5    13   15.00    10.0  -     76           76    +76
14   Mamalo               3    60.0    14   16.00    8.5   -     82           82    +82
15   Stellar Fella        3    60.0    15   31.00    8.5   -     82           82    +82
99   Great Barrier        4    57.5    99   0.00     10.0  -     74           74    +0
99   Just A Mo            3    60.0    99   0.00     8.5   -     82           82    +0
99   Statesman            2    60.0    99   0.00     5.5   -     88           88    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 San Simon - 86 6 +80 8.5 -
2 Dual Prophecy - 79 82 -3 8.5 -
3 Mid Winter Wind - 116 82 +34 8.5 -
4 Secret Chord Line 79 92 79 +13 10.0
5 Precipeace - - 82 -82 8.5 -
6 Two Miles West - 93 82 +11 8.5 -
7 To The Rescue - 82 76 +6 10.0 -
8 Justcantgetenough 78 57 88 -31 5.5 -
9 Hat Man - 60 79 -19 10.0 -
10 Knockemstiff 77 65 88 -23 5.5 -
11 Mr Blue Flame - 59 82 -23 8.5 -
12 Duke Of Oxford - 66 74 -8 8.5 -
13 Thunderbird - 70 76 -6 10.0 -
14 Mamalo - - 82 -82 8.5 -
15 Stellar Fella - - 82 -82 8.5 -
99 Great Barrier - 60 74 -14 10.0 -
99 Just A Mo - - 82 -82 8.5 -
99 Statesman - 63 88 -25 5.5 -
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