Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (For Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Joe Harman
Reference for assessment
Exact Matches
2 / 17
Calculated = Official
Close Matches
7 / 17
Within 2 points
Significant Diffs
9 / 17
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    Prince Of Heaven     2    60.0    1    0.00     0.0   59    58           58    -1
2    Joe Harman           4    60.0    2    0.25     2.0   54    54           54    +0
3    Flying Asterix       2    60.0    3    1.50     0.0   36    63           63    +27
4    Space Explorer       2    60.0    4    4.00     0.0   67    60           60    -7
5    Belle's First Wave   3    60.0    5    4.75     4.5   55    49           49    -6
6    Ballycotton          2    56.5    6    6.00     0.0   54    51           51    -3
7    Twice A Saint        2    60.0    7    6.05     0.0   63    58           58    -5
8    Great Ecstasy        3    60.0    8    7.80     4.5   51    49           49    -2
9    Vuvuzela Umlilo      2    60.0    9    11.30    0.0   67    58           58    -9
10   Antonia Augusta      2    57.0    10   24.05    0.0   60    52           52    -8
11   Lead A Merry Dance   3    60.0    11   25.55    4.5   44    49           49    +5
12   The Last Belle       2    60.0    12   26.05    0.0   59    58           58    -1
13   Red Centre           2    56.5    13   31.05    0.0   74    51           64    -10
14   Thalia's Galaxy      3    60.0    14   31.30    4.5   53    49           49    -4
15   Ragsaa               3    56.5    15   31.80    4.5   49    42           42    -7
16   Cosmic Empire        3    60.0    16   39.05    4.5   33    49           49    +16
99   Gold For Africa      3    56.5    99   0.00     4.5   -     42           42    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Prince Of Heaven 59 58 58 ✓ Match 0.0 -
2 Joe Harman Line 54 54 54 ✓ Match 2.0
3 Flying Asterix 36 61 63 -2 0.0 -
4 Space Explorer 67 67 60 +7 0.0 -
5 Belle's First Wave 55 51 49 +2 4.5 -
6 Ballycotton 54 53 51 +2 0.0 -
7 Twice A Saint 63 64 58 +6 0.0 -
8 Great Ecstasy 51 61 49 +12 4.5 -
9 Vuvuzela Umlilo 67 67 58 +9 0.0 -
10 Antonia Augusta 60 57 52 +5 0.0 -
11 Lead A Merry Dance 44 40 49 -9 4.5 -
12 The Last Belle 59 59 58 +1 0.0 -
13 Red Centre 74 72 64 +8 0.0 -
14 Thalia's Galaxy 53 47 49 -2 4.5 -
15 Ragsaa 49 62 42 +20 4.5 -
16 Cosmic Empire 33 33 49 -16 4.5 -
99 Gold For Africa - 68 42 +26 4.5 -
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