Official NHA Assessment

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

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Line Horse
Miss Rose
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
6 / 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    La Fille             3    60.0    1    0.00     1.5   63    60           60    -3
2    Emily's Spirit       2    57.5    2    0.25     0.5   -     57           57    +57
3    Miss Rose            3    60.0    3    0.35     1.5   60    60           60    +0
4    Back To Formentera   3    60.0    4    1.60     1.5   56    60           60    +4
5    Babyitscoldoutside   3    60.0    5    4.10     1.5   53    60           60    +7
6    Wonder Woman         6    60.0    6    5.10     0.0   48    63           63    +15
7    Rio Supremo          3    60.0    7    5.35     1.5   58    60           60    +2
8    Glitterfox           2    57.0    8    6.35     0.5   -     56           56    +56
9    Miss United States   3    60.0    9    9.60     1.5   56    60           60    +4
10   Miss Glamour         3    60.0    10   12.10    1.5   26    60           60    +34
11   Word Processor       3    60.0    11   15.35    1.5   37    60           60    +23
12   Bold Leah            4    60.0    12   16.60    2.0   49    59           59    +10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 La Fille 63 63 60 +3 1.5 -
2 Emily's Spirit - 53 57 -4 0.5 -
3 Miss Rose Line 60 57 60 -3 1.5
4 Back To Formentera 56 60 60 ✓ Match 1.5 -
5 Babyitscoldoutside 53 56 60 -4 1.5 -
6 Wonder Woman 48 43 63 -20 0.0 -
7 Rio Supremo 58 52 60 -8 1.5 -
8 Glitterfox - 57 56 +1 0.5 -
9 Miss United States 56 52 60 -8 1.5 -
10 Miss Glamour 26 30 60 -30 1.5 -
11 Word Processor 37 37 60 -23 1.5 -
12 Bold Leah 49 40 59 -19 2.0 -
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