Official NHA Assessment

Race 8: RACEHORSE OWNERS ASSOCIATION MIDDLE STAKES (For horses with nett rating of 105 and below)

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Line Horse
Mary's Greenlight
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
4 / 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    Player               3    52.0    1    0.00     5.0   85    82           82    -3
2    Jury's Out           2    56.0    2    0.40     0.0   90    105          105   +15
3    Mary's Greenlight    4    60.0    3    4.30     2.5   103   103          103   +0
4    Key Element          4    58.0    4    4.35     2.5   101   99           99    -2
5    Slinky Mapimpi       5    58.0    5    4.85     0.0   97    104          104   +7
6    Care Forgot          3    52.0    6    5.05     5.0   98    82           88    -10
7    Ikigai               8    52.0    7    5.45     0.0   85    92           92    +7
8    Battleground         5    58.0    8    14.75    0.0   96    104          104   +8
9    Captainofthegreen    3    58.0    9    19.75    5.0   96    94           94    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Player 85 84 82 +2 5.0 -
2 Jury's Out 90 85 105 -20 0.0 -
3 Mary's Greenlight Line 103 103 103 ✓ Match 2.5
4 Key Element 101 92 99 -7 2.5 -
5 Slinky Mapimpi 97 101 104 -3 0.0 -
6 Care Forgot 98 102 88 +14 5.0 -
7 Ikigai 85 91 92 -1 0.0 -
8 Battleground 96 92 104 -12 0.0 -
9 Captainofthegreen 96 96 94 +2 5.0 -
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