Official NHA Assessment

Race 5: JACQUELINE HENDERSON, GRAHAM KENT, GINGER MASTERTON PINNACLE STAKES (F & M) (For Fillies and Mares)

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Line Horse
Caralluma
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 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    Thumbs Up            4    56.0    1    0.00     3.5   102   103          103   +1
2    Mill Queen           5    54.0    2    1.50     0.0   96    106          106   +10
3    Caralluma            4    50.5    3    3.10     3.5   92    92           92    +0
4    Freed From Desire    3    60.0    4    3.30     3.0   116   112          112   -4
5    Anne Boleyn          5    50.5    5    3.80     0.0   90    99           99    +9
6    May Queen            5    56.0    6    9.20     0.0   100   110          110   +10
7    Lucy In The Sky      4    52.0    7    9.90     3.5   90    95           95    +5
8    Freedom Of Choice    3    46.5    8    14.00    3.0   83    85           85    +2
9    Celestial Love       4    60.0    9    25.00    3.5   113   111          111   -2
99   Ecstatic Green       4    54.0    99   0.00     3.5   -     99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thumbs Up 102 106 103 +3 3.5 -
2 Mill Queen 96 90 106 -16 0.0 -
3 Caralluma Line 92 94 92 +2 3.5
4 Freed From Desire 116 116 112 +4 3.0 -
5 Anne Boleyn 90 93 99 -6 0.0 -
6 May Queen 100 90 110 -20 0.0 -
7 Lucy In The Sky 90 74 95 -21 3.5 -
8 Freedom Of Choice 83 64 85 -21 3.0 -
9 Celestial Love 113 113 111 +2 3.5 -
99 Ecstatic Green - 106 99 +7 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