Official NHA Assessment

Race 3: JOHAN VAN DER LINDEN, NICK BLIGNAUT, JACOBUS VILJOEN MAIDEN PLATE (F & M) (For Maiden F & M)

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Line Horse
City Lights
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 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    City Lights          4    60.0    1    0.00     1.5   61    61           61    +0
2    Lunar Rainbow        3    60.0    2    1.30     3.5   66    60           60    -6
3    World Tour           3    60.0    3    1.60     3.5   64    60           60    -4
4    Artic Silver         3    60.0    4    2.00     3.5   70    60           60    -10
5    Jinger Jam           3    60.0    5    3.50     3.5   59    58           58    -1
6    Bella Boop Boop      3    60.0    6    4.80     3.5   64    57           57    -7
7    Amber Eyes           3    56.0    7    5.10     3.5   55    49           49    -6
8    Pass The Baton       4    60.0    8    5.20     1.5   55    61           61    +6
99   Flightlight          3    60.0    99   0.00     3.5   -     57           57    +0
99   Art Nouveau          3    60.0    99   0.00     3.5   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 City Lights Line 61 52 61 -9 1.5
2 Lunar Rainbow 66 57 60 -3 3.5 -
3 World Tour 64 66 60 +6 3.5 -
4 Artic Silver 70 77 60 +17 3.5 -
5 Jinger Jam 59 63 58 +5 3.5 -
6 Bella Boop Boop 64 58 57 +1 3.5 -
7 Amber Eyes 55 50 49 +1 3.5 -
8 Pass The Baton 55 48 61 -13 1.5 -
99 Flightlight - 61 57 +4 3.5 -
99 Art Nouveau - 80 57 +23 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