Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION MR 68 HANDICAP (Open)

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Line Horse
Slainte Mhath
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
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    Catch Your Breath    4    59.0    1    0.00     0.5   68    65           68    +0
2    To The Hilt          3    56.5    2    0.25     1.0   71    59           61    -10
3    Fujisan              4    60.5    3    1.00     0.5   71    72           72    +1
4    Slainte Mhath        4    58.0    4    2.25     0.5   66    66           66    +0
5    Meetatthewindsor     5    59.0    5    3.50     0.0   66    67           67    +1
6    Head Gardener        3    56.5    6    5.00     1.0   61    59           59    -2
7    Godfather            2    56.5    7    5.10     0.0   61    61           61    +0
8    Reach Forthe Stars   5    59.0    8    5.60     0.0   66    66           66    +0
9    Mister Whistle       4    52.5    9    6.85     0.5   51    52           52    +1
10   Adios Amigos         4    56.0    10   8.35     0.5   60    59           59    -1
11   Magic Prince         2    60.0    11   11.35    0.0   68    68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Catch Your Breath 68 94 68 +26 0.5 -
2 To The Hilt 71 73 61 +12 1.0 -
3 Fujisan 71 60 72 -12 0.5 -
4 Slainte Mhath Line 66 81 66 +15 0.5
5 Meetatthewindsor 66 76 67 +9 0.0 -
6 Head Gardener 61 66 59 +7 1.0 -
7 Godfather 61 57 61 -4 0.0 -
8 Reach Forthe Stars 66 56 66 -10 0.0 -
9 Mister Whistle 51 52 52 ✓ Match 0.5 -
10 Adios Amigos 60 55 59 -4 0.5 -
11 Magic Prince 68 66 68 -2 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