Official NHA Assessment

Race 9: NEXT VAAL RACEMEETING TUESDAY 30 MAY MR 68 HANDICAP (Open)

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Line Horse
Napoleon
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
1 / 15
Within 2 points
Significant Diffs
9 / 15
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    Sage King            3    60.5    1    0.00     2.0   69    65           69    +0
2    Napoleon             3    61.0    2    0.80     2.0   70    70           70    +0
3    Gilda Gray           3    55.0    3    1.00     2.0   58    58           58    +0
4    Luthuli              5    60.0    4    3.25     0.0   72    70           70    -2
5    The Chosen One       2    57.5    5    4.50     0.0   67    63           63    -4
6    Hotchiwitchi         4    56.0    6    5.25     0.5   60    59           59    -1
7    Carnelo              6    57.0    7    6.50     0.0   62    62           62    +0
8    Devilish Dancer      4    55.0    8    6.55     0.5   57    57           57    +0
9    Libeccio             5    59.0    9    8.00     0.0   70    66           66    -4
10   Eagle Alley          4    53.5    10   9.25     0.5   60    54           54    -6
11   Corapi               3    58.0    11   12.50    2.0   64    60           60    -4
12   Batik                3    53.5    12   13.00    2.0   60    51           51    -9
13   Samthewiseman        5    56.5    13   13.75    0.0   65    61           61    -4
14   Barmaid              2    55.5    14   14.00    0.0   62    59           59    -3
15   Coromandel           4    52.0    15   16.00    0.5   52    51           51    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sage King 69 72 69 +3 2.0 -
2 Napoleon Line 70 72 70 +2 2.0
3 Gilda Gray 58 64 58 +6 2.0 -
4 Luthuli 72 74 70 +4 0.0 -
5 The Chosen One 67 52 63 -11 0.0 -
6 Hotchiwitchi 60 53 59 -6 0.5 -
7 Carnelo 62 75 62 +13 0.0 -
8 Devilish Dancer 57 50 57 -7 0.5 -
9 Libeccio 70 62 66 -4 0.0 -
10 Eagle Alley 60 58 54 +4 0.5 -
11 Corapi 64 67 60 +7 2.0 -
12 Batik 60 57 51 +6 2.0 -
13 Samthewiseman 65 52 61 -9 0.0 -
14 Barmaid 62 55 59 -4 0.0 -
15 Coromandel 52 59 51 +8 0.5 -
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