Official NHA Assessment

Race 6: JACQUELINE HENDERSON, GRAHAM KENT, GINGER MASTERTON FM 90 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Magical Flight
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 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    On The Horizon       4    62.0    1    0.00     1.0   94    89           94    +0
2    Magical Flight       4    58.0    2    0.30     1.0   86    86           86    +0
3    Flamboyant Flyer     4    52.0    3    0.40     1.0   78    74           74    -4
4    Work Of Time         2    54.0    4    0.70     0.0   83    80           80    -3
5    Radu                 5    53.5    5    1.25     0.0   77    78           78    +1
6    Strange Magic        5    55.0    6    2.75     0.0   80    79           79    -1
7    Andi's Girl          4    54.5    7    3.20     1.0   83    76           76    -7
8    Duenna               2    58.5    8    3.25     0.0   92    86           86    -6
9    Sharapova            5    53.5    9    3.75     0.0   77    75           75    -2
10   Sea Anemone          5    60.0    10   5.00     0.0   90    87           87    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 On The Horizon 94 100 94 +6 1.0 -
2 Magical Flight Line 86 85 86 -1 1.0
3 Flamboyant Flyer 78 77 74 +3 1.0 -
4 Work Of Time 83 75 80 -5 0.0 -
5 Radu 77 64 78 -14 0.0 -
6 Strange Magic 80 69 79 -10 0.0 -
7 Andi's Girl 83 93 76 +17 1.0 -
8 Duenna 92 94 86 +8 0.0 -
9 Sharapova 77 80 75 +5 0.0 -
10 Sea Anemone 90 81 87 -6 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