Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING FRIDAY 29 APRIL MR 78 HANDICAP (Open)

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Line Horse
Herrin
Reference for assessment
Exact Matches
0 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
10 / 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    Brass Bell           8    55.5    1    0.00     0.0   69    76           69    +0
2    Slings And Arrows    3    59.5    2    1.50     3.0   81    78           78    -3
3    Herrin               4    60.5    3    4.25     3.5   79    79           79    +0
4    Phil's Power         7    61.5    4    4.35     0.0   81    88           88    +7
5    Captain's Knot       3    62.0    5    4.85     3.0   86    83           83    -3
6    Jet Mirage           3    56.5    6    5.10     3.0   78    72           72    -6
7    Bad Habit            5    60.0    7    5.85     0.0   78    85           85    +7
8    Emperors Decree      4    55.0    8    9.10     3.5   68    68           68    +0
9    Vic Falls            3    57.5    9    11.10    3.0   77    74           74    -3
10   Storm Chaser         4    59.0    10   11.35    3.5   76    76           76    +0
11   Soft Spot            3    55.5    11   13.85    3.0   73    70           70    -3
12   Persica              5    56.5    12   13.90    0.0   71    78           78    +7
13   Sicilian Tiger       3    53.0    13   14.40    3.0   68    65           65    -3
99   Isn't It Bliss       4    50.5    99   0.00     3.5   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Brass Bell 69 55 69 -14 0.0 -
2 Slings And Arrows 81 92 78 +14 3.0 -
3 Herrin Line 79 77 79 -2 3.5
4 Phil's Power 81 75 88 -13 0.0 -
5 Captain's Knot 86 68 83 -15 3.0 -
6 Jet Mirage 78 100 72 +28 3.0 -
7 Bad Habit 78 75 85 -10 0.0 -
8 Emperors Decree 68 66 68 -2 3.5 -
9 Vic Falls 77 64 74 -10 3.0 -
10 Storm Chaser 76 69 76 -7 3.5 -
11 Soft Spot 73 69 70 -1 3.0 -
12 Persica 71 48 78 -30 0.0 -
13 Sicilian Tiger 68 63 65 -2 3.0 -
99 Isn't It Bliss - 51 59 -8 3.5 -
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