Official NHA Assessment

Race 7: WALMER HANDICAP (For Fillies and Mares - Non-Black Type)

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Line Horse
Rattle Mouse
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 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    Rattle Mouse         5    54.5    1    0.00     0.0   83    83           83    +0
2    Wings Of Fire        4    54.5    2    0.25     0.5   83    82           82    -1
3    Ideal Angel          5    53.5    3    0.35     0.0   81    86           86    +5
4    Vision On Ice        4    52.0    4    1.85     0.5   74    80           80    +6
5    Colorado Springs     4    60.0    5    1.90     0.5   94    96           96    +2
6    Princess Kalisi      5    59.5    6    3.40     0.0   93    94           94    +1
7    Respectable Miss     4    54.5    7    3.65     0.5   83    83           83    +0
8    Golightly            4    56.0    8    3.90     0.5   86    86           86    +0
9    Calandra             5    58.0    9    4.15     0.0   90    91           91    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rattle Mouse Line 83 85 83 +2 0.0
2 Wings Of Fire 83 93 82 +11 0.5 -
3 Ideal Angel 81 94 86 +8 0.0 -
4 Vision On Ice 74 75 80 -5 0.5 -
5 Colorado Springs 94 90 96 -6 0.5 -
6 Princess Kalisi 93 86 94 -8 0.0 -
7 Respectable Miss 83 50 83 -33 0.5 -
8 Golightly 86 84 86 -2 0.5 -
9 Calandra 90 87 91 -4 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