Official NHA Assessment

Race 7: SILVER SLIPPER (Listed) (For all 3 yr old Fillies/ 2nd Leg Triple Tiara)

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Line Horse
Emma Of Normandy
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
4 / 6
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    New Galaxy           4    58.0    1    0.00     1.0   52    37           37    -15
2    Trust Me             2    58.0    2    0.75     0.0   53    43           43    -10
3    Emma Of Normandy     2    58.0    3    3.75     0.0   40    40           40    +0
4    Dark Future          2    58.0    4    9.75     0.0   47    39           39    -8
5    Silent Power         3    58.0    5    12.75    2.0   38    35           35    -3
6    Jumped A Red         2    58.0    6    21.75    0.0   42    39           39    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 New Galaxy 52 45 37 +8 1.0 -
2 Trust Me 53 51 43 +8 0.0 -
3 Emma Of Normandy Line 40 44 40 +4 0.0
4 Dark Future 47 49 39 +10 0.0 -
5 Silent Power 38 42 35 +7 2.0 -
6 Jumped A Red 42 42 39 +3 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