Official NHA Assessment

Race 5: BETWAY BOOST MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
The Donelly
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
7 / 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    Viva Brazil          3    57.0    1    0.00     8.5   -     57           6     +6
2    Emblem Of War        3    57.0    2    0.40     8.5   -     62           62    +62
3    Livebythesword       2    57.0    3    0.70     0.0   -     79           79    +79
4    Erimitage            4    57.0    4    5.25     6.0   -     62           62    +62
5    The Donelly          3    60.0    5    5.30     8.5   63    63           63    +0
6    Harold The Duke      3    60.0    6    6.50     8.5   58    63           63    +5
7    Eiger Sanction       3    57.0    7    6.75     8.5   82    57           72    -10
8    Pedasos              3    56.0    8    11.50    8.5   54    55           55    +1
9    Mariachi Madness     2    55.5    9    30.00    0.0   -     71           71    +71
10   O'Ryon               2    57.0    10   31.50    0.0   57    74           74    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Viva Brazil - 94 6 +88 8.5 -
2 Emblem Of War - 75 62 +13 8.5 -
3 Livebythesword - 59 79 -20 0.0 -
4 Erimitage - 62 62 ✓ Match 6.0 -
5 The Donelly Line 63 62 63 -1 8.5
6 Harold The Duke 58 86 63 +23 8.5 -
7 Eiger Sanction 82 79 72 +7 8.5 -
8 Pedasos 54 53 55 -2 8.5 -
9 Mariachi Madness - 57 71 -14 0.0 -
10 O'Ryon 57 52 74 -22 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