Official NHA Assessment

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

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Line Horse
Opening Ceremony
Reference for assessment
Exact Matches
3 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
7 / 14
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    Clap Of Thunder      3    59.5    1    0.00     3.0   62    58           58    -4
2    Opening Ceremony     3    56.0    2    0.75     3.0   55    55           55    +0
3    So Dacha             3    54.5    3    1.00     3.0   52    52           52    +0
4    Vuvuzela Umlilo      2    59.0    4    1.05     0.0   67    67           67    +0
5    Painite              5    61.0    5    1.55     0.0   -     70           70    +70
6    Chasing Cheetahs     3    58.0    6    2.30     3.0   59    57           57    -2
7    Twice A Saint        2    58.5    7    2.80     0.0   66    64           64    -2
8    Texas Tornado        2    53.0    8    3.30     0.0   60    52           52    -8
9    Prince Of Heaven     2    54.0    9    6.30     0.0   57    53           53    -4
10   Thalia's Galaxy      3    61.0    10   7.30     3.0   -     61           61    +61
11   White Witch          2    57.0    11   9.05     0.0   67    59           59    -8
12   Maya's Cat           3    60.0    12   9.55     3.0   69    59           59    -10
99   Natasha Rostov       3    52.5    99   0.00     3.0   -     44           44    +0
99   Cosmic Empire        3    53.0    99   0.00     3.0   -     45           45    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Clap Of Thunder 62 66 58 +8 3.0 -
2 Opening Ceremony Line 55 55 55 ✓ Match 3.0
3 So Dacha 52 48 52 -4 3.0 -
4 Vuvuzela Umlilo 67 67 67 ✓ Match 0.0 -
5 Painite - 82 70 +12 0.0 -
6 Chasing Cheetahs 59 58 57 +1 3.0 -
7 Twice A Saint 66 64 64 ✓ Match 0.0 -
8 Texas Tornado 60 55 52 +3 0.0 -
9 Prince Of Heaven 57 58 53 +5 0.0 -
10 Thalia's Galaxy - 47 61 -14 3.0 -
11 White Witch 67 52 59 -7 0.0 -
12 Maya's Cat 69 67 59 +8 3.0 -
99 Natasha Rostov - 53 44 +9 3.0 -
99 Cosmic Empire - 33 45 -12 3.0 -
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