Official NHA Assessment

Race 1: DOWNLOAD THE RACE CARD ONLINE www.goldcircle.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Trippi T
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    Lightning Jimmy      4    60.0    1    0.00     4.0   62    68           68    +6
2    Trippi T             3    60.0    2    0.30     3.5   69    69           69    +0
3    Silver Savage        2    60.0    3    2.40     2.5   75    71           71    -4
4    Railroad             2    60.0    4    3.45     2.5   76    71           71    -5
5    Bomber Stream        4    60.0    5    4.65     4.0   73    68           68    -5
6    Nantes Festival      2    60.0    6    4.70     2.5   64    71           71    +7
7    Castle Mey           3    58.5    7    5.70     3.5   60    66           66    +6
8    U King               3    60.0    8    10.30    3.5   45    69           69    +24
9    Jet Speed            3    56.0    9    11.40    3.5   44    61           61    +17
10   Paschals Njaro       3    60.0    10   15.60    3.5   35    69           69    +34
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lightning Jimmy 62 48 68 -20 4.0 -
2 Trippi T Line 69 75 69 +6 3.5
3 Silver Savage 75 52 71 -19 2.5 -
4 Railroad 76 60 71 -11 2.5 -
5 Bomber Stream 73 52 68 -16 4.0 -
6 Nantes Festival 64 51 71 -20 2.5 -
7 Castle Mey 60 61 66 -5 3.5 -
8 U King 45 50 69 -19 3.5 -
9 Jet Speed 44 46 61 -15 3.5 -
10 Paschals Njaro 35 35 69 -34 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