Official NHA Assessment

Race 4: www.tabgold.co.za NOVICE HANDICAP (Maidens & 1 time winners)

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Line Horse
Ancient World
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
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    The Shepherd         3    59.0    1    0.00     5.0   86    72           78    -8
2    Ancient World        2    60.0    2    1.10     0.0   88    88           88    +0
3    Johnny The Thief     2    57.5    3    1.40     0.0   83    82           82    -1
4    Common Grounds       4    60.0    4    2.80     2.5   88    81           81    -7
5    Galaxy Explorer      4    57.5    5    3.05     2.5   83    76           76    -7
6    Ebony Bay            3    52.0    6    14.95    5.0   54    58           58    +4
99   Canford Ice          2    59.5    99   0.00     0.0   -     83           83    +0
99   Celtic Beauty        4    57.0    99   0.00     2.5   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Shepherd 86 97 78 +19 5.0 -
2 Ancient World Line 88 85 88 -3 0.0
3 Johnny The Thief 83 95 82 +13 0.0 -
4 Common Grounds 88 86 81 +5 2.5 -
5 Galaxy Explorer 83 60 76 -16 2.5 -
6 Ebony Bay 54 50 58 -8 5.0 -
99 Canford Ice - 82 83 -1 0.0 -
99 Celtic Beauty - 96 73 +23 2.5 -
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