Official NHA Assessment

Race 6: THE ARF HANDICAPPERS CONFERENCE IN SA - 22 TO 25 JULY CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
Coffeeberry
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
4 / 13
Within 2 points
Significant Diffs
8 / 13
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    Lava Lamp            3    55.5    1    0.00     2.0   75    62           75    +0
2    Silver Flare         4    46.0    2    1.60     0.5   56    51           51    -5
3    Coffeeberry          5    57.5    3    3.30     0.0   72    72           72    +0
4    Cartagena            4    53.5    4    3.70     0.5   67    63           63    -4
5    Damova               3    55.5    5    5.30     2.0   71    62           62    -9
6    The Merciful         5    52.0    6    7.70     0.0   58    59           59    +1
7    Pomozelous           3    55.5    7    8.10     2.0   68    62           62    -6
8    Angel's Wish         6    48.5    8    8.70     0.0   55    52           52    -3
9    Gold De Grace        4    52.0    9    8.80     0.5   58    58           58    +0
10   City Lights          4    46.0    10   20.30    0.5   56    46           46    -10
11   Order Of Hope        3    60.0    11   99.99    2.0   78    71           71    -7
99   Rainy Season         4    52.0    99   0.00     0.5   -     58           58    +0
99   Artic Silver         3    57.5    99   0.00     2.0   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lava Lamp 75 84 75 +9 2.0 -
2 Silver Flare 56 64 51 +13 0.5 -
3 Coffeeberry Line 72 72 72 ✓ Match 0.0
4 Cartagena 67 77 63 +14 0.5 -
5 Damova 71 85 62 +23 2.0 -
6 The Merciful 58 54 59 -5 0.0 -
7 Pomozelous 68 62 62 ✓ Match 2.0 -
8 Angel's Wish 55 54 52 +2 0.0 -
9 Gold De Grace 58 51 58 -7 0.5 -
10 City Lights 56 52 46 +6 0.5 -
11 Order Of Hope 78 78 71 +7 2.0 -
99 Rainy Season - 56 58 -2 0.5 -
99 Artic Silver - 77 66 +11 2.0 -
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