Official NHA Assessment

Race 2: HEALTHPOINT SURGICAL SUITES MERIT RATED 60 HANDICAP (Open)

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Line Horse
Days Gone By
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
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    Raining Again        6    60.0    1    0.00     0.0   60    72           60    +0
2    Jacky Sparrow        3    56.0    2    5.00     6.0   64    52           54    -10
3    Days Gone By         3    59.5    3    5.05     6.0   59    59           59    +0
4    Mustatheef           3    52.5    4    5.80     6.0   45    45           45    +0
5    Deposition           6    59.0    5    7.05     0.0   58    70           70    +12
6    Chetan               3    57.5    6    9.55     6.0   55    55           55    +0
7    At The Office        6    54.0    7    10.55    0.0   48    60           60    +12
8    Pacific Duke         4    56.0    8    10.65    3.0   52    58           58    +6
9    Testify              2    57.5    9    13.15    0.0   67    67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Raining Again 60 73 60 +13 0.0 -
2 Jacky Sparrow 64 80 54 +26 6.0 -
3 Days Gone By Line 59 51 59 -8 6.0
4 Mustatheef 45 42 45 -3 6.0 -
5 Deposition 58 68 70 -2 0.0 -
6 Chetan 55 45 55 -10 6.0 -
7 At The Office 48 45 60 -15 0.0 -
8 Pacific Duke 52 49 58 -9 3.0 -
9 Testify 67 71 67 +4 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