Official NHA Assessment

Race 4: GALLOP TV MIDDLE STAKES (F & M) (For Fillies and Mares)

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Line Horse
Ice Rain
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
2 / 9
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    Perilla              5    57.0    1    0.00     0.0   89    94           94    +5
2    Ice Rain             4    61.5    2    0.10     1.0   101   101          101   +0
3    Tomyris              4    58.5    3    0.50     1.0   93    100          100   +7
4    Educator             2    58.5    4    3.20     0.0   96    99           99    +3
5    Forward Motion       3    60.0    5    3.25     2.5   98    97           97    -1
6    Winter Rainfall      4    57.0    6    4.05     1.0   87    93           93    +6
7    Lock And Key         2    56.0    7    4.10     0.0   93    93           93    +0
8    Convocation          5    57.0    8    4.90     0.0   94    94           94    +0
99   Amelia's Legacy      3    57.0    99   0.00     2.5   -     89           89    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Perilla 89 92 94 -2 0.0 -
2 Ice Rain Line 101 101 101 ✓ Match 1.0
3 Tomyris 93 93 100 -7 1.0 -
4 Educator 96 96 99 -3 0.0 -
5 Forward Motion 98 98 97 +1 2.5 -
6 Winter Rainfall 87 86 93 -7 1.0 -
7 Lock And Key 93 90 93 -3 0.0 -
8 Convocation 94 94 94 ✓ Match 0.0 -
99 Amelia's Legacy - 92 89 +3 2.5 -
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