Official NHA Assessment

Race 6: WWW.TAB.CO.ZA MR 66 HANDICAP (Open)

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Line Horse
Storm Ahead
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 10
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    Cartagena            4    54.5    1    0.00     1.0   55    52           55    +0
2    Gamer                4    58.5    2    0.05     1.0   63    60           60    -3
3    Storm Ahead          4    61.0    3    2.25     1.0   68    68           68    +0
4    Instant Attraction   3    59.0    4    2.55     2.5   72    60           62    -10
5    Viva De Janeiro      5    57.5    5    2.75     0.0   61    62           62    +1
6    Carnelo              6    60.0    6    4.00     0.0   66    66           66    +0
7    Kiss Of Fire         5    58.5    7    4.50     0.0   63    62           62    -1
8    Red Sparrow          3    61.0    8    5.10     2.5   73    62           63    -10
9    City Lights          4    53.5    9    8.10     1.0   61    50           51    -10
10   Call Me Master       8    59.5    10   11.80    0.0   65    64           64    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cartagena 55 77 55 +22 1.0 -
2 Gamer 63 65 60 +5 1.0 -
3 Storm Ahead Line 68 80 68 +12 1.0
4 Instant Attraction 72 60 62 -2 2.5 -
5 Viva De Janeiro 61 50 62 -12 0.0 -
6 Carnelo 66 75 66 +9 0.0 -
7 Kiss Of Fire 63 68 62 +6 0.0 -
8 Red Sparrow 73 55 63 -8 2.5 -
9 City Lights 61 52 51 +1 1.0 -
10 Call Me Master 65 65 64 +1 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