Official NHA Assessment

Race 4: KELLY MITCHLEY MR 74 HANDICAP (Open)

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Line Horse
Pedro
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
4 / 10
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    Red William          5    61.0    1    0.00     0.0   76    73           76    +0
2    Pedro                6    61.0    2    2.25     0.0   76    76           76    +0
2    Sun Spectacular      4    60.5    2    2.25     7.0   75    61           65    -10
4    Cheerful Charlie B   3    58.0    4    3.50     9.0   71    50           61    -10
5    Catch The Tune       6    61.0    5    4.50     0.0   76    73           73    -3
6    One Giant Leap       3    56.0    6    4.75     9.0   72    45           62    -10
7    Kohana               2    59.5    7    7.25     0.0   74    70           70    -4
8    Rock Of Futura       2    54.0    8    9.25     0.0   80    59           70    -10
9    Coulditbe            4    58.5    9    16.50    7.0   71    54           61    -10
10   Greenlight Legend    4    62.0    10   99.92    7.0   78    61           68    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Red William 76 83 76 +7 0.0 -
2 Pedro Line 76 72 76 -4 0.0
2 Sun Spectacular 75 69 65 +4 7.0 -
4 Cheerful Charlie B 71 61 61 ✓ Match 9.0 -
5 Catch The Tune 76 70 73 -3 0.0 -
6 One Giant Leap 72 74 62 +12 9.0 -
7 Kohana 74 70 70 ✓ Match 0.0 -
8 Rock Of Futura 80 72 70 +2 0.0 -
9 Coulditbe 71 69 61 +8 7.0 -
10 Greenlight Legend 78 78 68 +10 7.0 -
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