Official NHA Assessment

Race 3: www.tabgold.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Edge Of Winter
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
9 / 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    Manhatten Cafe       3    60.0    1    0.00     4.0   -     65           6     +6
2    One Shot Wonder      3    60.0    2    0.40     4.0   70    70           70    +0
3    Runaway Song         6    60.0    3    0.90     0.0   -     77           77    +77
4    Metallic Gold        3    60.0    4    1.80     4.0   -     68           68    +68
5    Mighty Mashona       3    60.0    5    3.90     4.0   74    66           66    -8
6    Edge Of Winter       3    60.0    6    5.80     4.0   65    65           65    +0
7    Quiz Master          3    60.0    7    6.70     4.0   70    65           65    -5
8    Merchant Gold        3    60.0    8    6.95     4.0   62    65           65    +3
9    National Flag        3    60.0    9    13.75    4.0   62    65           65    +3
10   Chipopo              3    58.5    10   15.65    4.0   30    62           62    +32
11   Captains Walk        3    60.0    11   20.55    4.0   54    65           65    +11
12   Varry Green          3    60.0    12   35.65    4.0   -     65           65    +65
99   Oh My Word Its Roy   3    60.0    99   0.00     4.0   -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Manhatten Cafe - 85 6 +79 4.0 -
2 One Shot Wonder 70 46 70 -24 4.0 -
3 Runaway Song - 98 77 +21 0.0 -
4 Metallic Gold - 75 68 +7 4.0 -
5 Mighty Mashona 74 70 66 +4 4.0 -
6 Edge Of Winter Line 65 60 65 -5 4.0
7 Quiz Master 70 60 65 -5 4.0 -
8 Merchant Gold 62 57 65 -8 4.0 -
9 National Flag 62 63 65 -2 4.0 -
10 Chipopo 30 18 62 -44 4.0 -
11 Captains Walk 54 54 65 -11 4.0 -
12 Varry Green - 45 65 -20 4.0 -
99 Oh My Word Its Roy - 50 65 -15 4.0 -
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