Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Divine Design
Reference for assessment
Exact Matches
3 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
8 / 12
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    Tipsy Tina           2    57.5    1    0.00     5.5   65    3            3     -62
2    Divine Design        3    59.0    2    3.25     8.5   -     -            -     +0
3    Burning Moon         3    59.0    3    3.35     8.5   -     -            -     +0
4    Emily's Spirit       2    59.0    4    3.85     5.5   71    6            61    -10
4    Peronzada            3    60.0    4    3.85     8.5   36    2            26    -10
6    Nairobi              3    59.0    6    4.10     8.5   -     -            -     +0
7    Red Sphere           2    59.0    7    4.60     5.5   64    6            54    -10
8    Sweet Ohanna         3    59.0    8    4.70     8.5   -     -            -     +0
9    All I Need Is You    3    59.0    9    7.70     8.5   -     -            -     +0
10   Mother Earth         3    59.0    10   13.20    8.5   -     -            -     +0
11   Die Kat Kom Weer     3    59.0    11   26.45    8.5   -     -            -     +0
99   Tune Again           6    60.0    99   0.00     0.0   -     19           19    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tipsy Tina 65 91 3 +88 5.5 -
2 Divine Design Line - 71 - +71 8.5
3 Burning Moon - 71 - +71 8.5 -
4 Emily's Spirit 71 53 61 -8 5.5 -
4 Peronzada 36 56 26 +30 8.5 -
6 Nairobi - 53 - +53 8.5 -
7 Red Sphere 64 58 54 +4 5.5 -
8 Sweet Ohanna - 52 - +52 8.5 -
9 All I Need Is You - - - ✓ Match 8.5 -
10 Mother Earth - - - ✓ Match 8.5 -
11 Die Kat Kom Weer - - - ✓ Match 8.5 -
99 Tune Again - 50 19 +31 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