Official NHA Assessment

Race 2: TRACK & BALL GAMING FM 90 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Desert Rose
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 8
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    Lady Tiptree         3    55.5    1    0.00     3.0   81    78           81    +0
2    Desert Rose          3    56.0    2    1.90     3.0   82    82           82    +0
3    Only Hearts          2    57.0    3    2.15     0.0   90    90           90    +0
4    Let It Snow          2    55.0    4    3.55     0.0   86    84           84    -2
5    Luna Eclipse         4    53.0    5    3.65     1.5   79    77           77    -2
6    Southern Cape        3    58.5    6    4.35     3.0   87    84           84    -3
7    Zinikele             5    55.0    7    8.25     0.0   86    83           83    -3
99   Oh So Squishy        3    60.0    99   0.00     3.0   -     87           87    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Tiptree 81 68 81 -13 3.0 -
2 Desert Rose Line 82 75 82 -7 3.0
3 Only Hearts 90 81 90 -9 0.0 -
4 Let It Snow 86 61 84 -23 0.0 -
5 Luna Eclipse 79 78 77 +1 1.5 -
6 Southern Cape 87 96 84 +12 3.0 -
7 Zinikele 86 89 83 +6 0.0 -
99 Oh So Squishy - 68 87 -19 3.0 -
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