Official NHA Assessment

Race 1: CHAMPION WORKRIDER OF THE SEASON - ANATHI FENI WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA

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Line Horse
Gold Agent
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
10 / 12
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    Gold Agent           2    58.5    1    0.00     1.0   70    70           70    +0
2    Seventeen Again      2    57.0    2    1.75     1.0   -     67           67    +67
3    Bellissivar          2    57.5    3    3.00     1.0   -     68           68    +68
4    Perini Palace        4    60.0    4    7.25     2.5   55    70           70    +15
5    It's Up To Me        2    60.0    5    7.50     1.0   40    73           73    +33
6    Golden Argo          3    60.0    6    10.50    2.0   62    71           71    +9
7    Jadese               2    57.5    7    13.50    1.0   -     68           68    +68
8    Centrefold           2    60.0    8    13.75    1.0   55    73           73    +18
9    Magic Bank           2    60.0    9    22.00    1.0   -     73           73    +73
10   Queen's Express      3    60.0    10   23.50    2.0   -     71           71    +71
99   Ritirata             3    60.0    99   0.00     2.0   -     71           71    +0
99   Ethensbeaut          2    57.0    99   0.00     1.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gold Agent Line 70 64 70 -6 1.0
2 Seventeen Again - 80 67 +13 1.0 -
3 Bellissivar - 73 68 +5 1.0 -
4 Perini Palace 55 56 70 -14 2.5 -
5 It's Up To Me 40 45 73 -28 1.0 -
6 Golden Argo 62 61 71 -10 2.0 -
7 Jadese - 47 68 -21 1.0 -
8 Centrefold 55 47 73 -26 1.0 -
9 Magic Bank - 42 73 -31 1.0 -
10 Queen's Express - 28 71 -43 2.0 -
99 Ritirata - - 71 -71 2.0 -
99 Ethensbeaut - 67 67 ✓ Match 1.0 -
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