Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING FRIDAY 3 MAY CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Puerto Plata (ARG)
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
2 / 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    Harold The Duke      3    56.0    1    0.00     4.5   62    62           62    +0
2    Puerto Plata (ARG)   3    60.0    2    0.25     4.5   70    70           70    +0
3    Soft Touch           2    50.0    3    0.75     0.0   50    65           65    +15
4    Ellis Island         4    52.0    4    1.00     1.5   60    66           66    +6
5    Juan Carlos          7    60.0    5    1.25     0.0   71    85           85    +14
6    Reach Forthe Stars   5    60.0    6    2.50     0.0   69    83           83    +14
7    Alado's Pride        7    58.5    7    4.25     0.0   69    78           78    +9
8    Great Affair         7    60.0    8    6.25     0.0   68    79           79    +11
9    Josi Mo              2    53.5    9    7.00     0.0   71    66           66    -5
10   Joe Harman           4    54.0    10   10.00    1.5   56    64           64    +8
11   Lady Tiptree         3    57.5    11   14.00    4.5   71    65           65    -6
12   Adios Amigos         4    58.0    12   14.75    1.5   65    72           72    +7
99   San Quintin          6    56.0    99   0.00     0.0   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Harold The Duke 62 86 62 +24 4.5 -
2 Puerto Plata (ARG) Line 70 68 70 -2 4.5
3 Soft Touch 50 54 65 -11 0.0 -
4 Ellis Island 60 66 66 ✓ Match 1.5 -
5 Juan Carlos 71 93 85 +8 0.0 -
6 Reach Forthe Stars 69 56 83 -27 0.0 -
7 Alado's Pride 69 73 78 -5 0.0 -
8 Great Affair 68 63 79 -16 0.0 -
9 Josi Mo 71 56 66 -10 0.0 -
10 Joe Harman 56 54 64 -10 1.5 -
11 Lady Tiptree 71 68 65 +3 4.5 -
12 Adios Amigos 65 55 72 -17 1.5 -
99 San Quintin - 58 71 -13 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