Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION FM 76 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Quiet Rebellion
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Kind Judy            4    60.0    1    0.00     6.0   76    83           76    +0
2    Summerland           5    52.5    2    2.00     0.0   80    83           83    +3
3    Quiet Rebellion      3    58.5    3    2.50     9.5   75    75           75    +0
4    Rattle Bag           6    53.5    4    2.75     0.0   65    84           84    +19
5    Cerulean Dancer      2    52.0    5    3.75     0.0   79    80           80    +1
6    Kiss To Dream        4    52.0    6    4.00     6.0   50    68           68    +18
7    Castle Durrow        4    58.5    7    11.00    6.0   73    80           80    +7
8    Song Of Angels       3    52.0    8    12.25    9.5   62    60           60    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kind Judy 76 73 76 -3 6.0 -
2 Summerland 80 45 83 -38 0.0 -
3 Quiet Rebellion Line 75 74 75 -1 9.5
4 Rattle Bag 65 71 84 -13 0.0 -
5 Cerulean Dancer 79 71 80 -9 0.0 -
6 Kiss To Dream 50 54 68 -14 6.0 -
7 Castle Durrow 73 71 80 -9 6.0 -
8 Song Of Angels 62 44 60 -16 9.5 -
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