Official NHA Assessment

Race 2: www.tabgold.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Amigo
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
2 / 14
Within 2 points
Significant Diffs
9 / 14
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    Artist's Model       3    57.0    1    0.00     8.5   -     58           6     +6
2    Go Grayson Go        3    57.0    2    2.70     8.5   -     60           60    +60
3    Shiny Bob            4    60.0    3    5.00     6.0   66    69           69    +3
4    Amigo                4    60.0    4    5.30     6.0   69    69           69    +0
5    Silver Platter       4    60.0    5    9.90     6.0   67    69           69    +2
6    Hoodwinked           3    60.0    6    10.15    8.5   69    64           64    -5
7    Iron Monger          2    60.0    7    10.65    0.0   61    81           81    +20
8    Tibbott Bourke       4    56.0    8    12.05    6.0   70    61           61    -9
9    Dapper               2    57.0    9    12.45    0.0   83    75           75    -8
10   Uncle Lucky          2    60.0    10   14.45    0.0   64    81           81    +17
11   See My Future        3    57.0    11   14.70    8.5   -     58           58    +58
12   Royal Alliance       2    54.5    12   14.75    0.0   66    70           70    +4
13   I Am Classy          3    55.5    13   16.95    8.5   -     55           55    +55
14   Greenlight Express   3    57.0    14   18.95    8.5   76    58           66    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Artist's Model - 96 6 +90 8.5 -
2 Go Grayson Go - 95 60 +35 8.5 -
3 Shiny Bob 66 60 69 -9 6.0 -
4 Amigo Line 69 64 69 -5 6.0
5 Silver Platter 67 69 69 ✓ Match 6.0 -
6 Hoodwinked 69 67 64 +3 8.5 -
7 Iron Monger 61 64 81 -17 0.0 -
8 Tibbott Bourke 70 51 61 -10 6.0 -
9 Dapper 83 72 75 -3 0.0 -
10 Uncle Lucky 64 61 81 -20 0.0 -
11 See My Future - 71 58 +13 8.5 -
12 Royal Alliance 66 60 70 -10 0.0 -
13 I Am Classy - 67 55 +12 8.5 -
14 Greenlight Express 76 68 66 +2 8.5 -
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