Official NHA Assessment

Race 5: ONLINE FORM GUIDE www.gallop.co.za B STAKES (For All Horses with a nett rating of 101 & below)

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Line Horse
Johnny The Thief
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
6 / 13
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    Field Marshal        3    60.0    1    0.00     3.5   98    82           82    -16
2    Trois Trois Quatre   5    58.5    2    0.90     0.0   88    90           90    +2
3    Johnny The Thief     2    58.5    3    1.15     0.0   90    90           90    +0
4    World Of Our Own     3    54.0    4    1.40     3.5   86    73           76    -10
5    Quatermain           2    52.5    5    4.00     0.0   81    75           75    -6
6    Afropolitan          6    57.0    6    4.30     0.0   86    83           83    -3
7    Queue Wing           7    51.5    7    5.20     0.0   83    72           73    -10
8    View Of The World    3    55.5    8    5.30     3.5   91    73           81    -10
9    Fine Admiral         3    47.0    9    5.60     3.5   75    56           65    -10
10   Nocturnal Flight     3    52.5    10   7.30     3.5   78    67           68    -10
11   French Trip          4    54.0    11   11.00    1.5   81    74           74    -7
12   Etiquette            3    57.0    12   15.30    3.5   85    76           76    -9
99   Spirit Of Levana     3    56.0    99   0.00     3.5   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Field Marshal 98 107 82 +25 3.5 -
2 Trois Trois Quatre 88 87 90 -3 0.0 -
3 Johnny The Thief Line 90 95 90 +5 0.0
4 World Of Our Own 86 87 76 +11 3.5 -
5 Quatermain 81 79 75 +4 0.0 -
6 Afropolitan 86 84 83 +1 0.0 -
7 Queue Wing 83 81 73 +8 0.0 -
8 View Of The World 91 78 81 -3 3.5 -
9 Fine Admiral 75 73 65 +8 3.5 -
10 Nocturnal Flight 78 72 68 +4 3.5 -
11 French Trip 81 88 74 +14 1.5 -
12 Etiquette 85 83 76 +7 3.5 -
99 Spirit Of Levana - 73 74 -1 3.5 -
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