Official NHA Assessment

Race 4: 4RACING.TV CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Lord Nelson
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    Puerto Plata (ARG)   3    58.0    1    0.00     4.5   67    64           64    -3
2    Harold The Duke      3    56.0    2    0.25     4.5   62    60           60    -2
3    Mo Flow              3    56.0    3    0.50     4.5   71    67           67    -4
4    Lord Nelson          3    54.5    4    0.75     4.5   63    63           63    +0
5    Dawn Cloud           2    52.0    5    0.80     0.0   64    67           67    +3
6    Pisces               2    54.0    6    3.55     0.0   66    68           68    +2
7    Keep The Fort        3    57.5    7    3.65     4.5   68    66           66    -2
8    Adios Amigos         4    60.0    8    4.40     2.0   68    74           74    +6
9    Racinante            2    50.0    9    8.90     0.0   55    57           57    +2
10   Climate Control      2    56.0    10   12.15    0.0   70    69           69    -1
11   King Of Seville      2    60.0    11   12.65    0.0   79    77           77    -2
12   Give Us A Smile      2    56.5    12   14.15    0.0   70    70           70    +0
13   Reach Forthe Stars   5    60.0    13   15.90    0.0   69    77           77    +8
99   San Quintin          6    56.0    99   0.00     0.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Puerto Plata (ARG) 67 68 64 +4 4.5 -
2 Harold The Duke 62 86 60 +26 4.5 -
3 Mo Flow 71 66 67 -1 4.5 -
4 Lord Nelson Line 63 55 63 -8 4.5
5 Dawn Cloud 64 60 67 -7 0.0 -
6 Pisces 66 56 68 -12 0.0 -
7 Keep The Fort 68 66 66 ✓ Match 4.5 -
8 Adios Amigos 68 55 74 -19 2.0 -
9 Racinante 55 50 57 -7 0.0 -
10 Climate Control 70 65 69 -4 0.0 -
11 King Of Seville 79 65 77 -12 0.0 -
12 Give Us A Smile 70 67 70 -3 0.0 -
13 Reach Forthe Stars 69 56 77 -21 0.0 -
99 San Quintin - 58 69 -11 0.0 -
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