Official NHA Assessment

Race 6: TAB4RACING APP FM 78 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Rattle Mouse
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
4 / 12
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    Vision On Ice        4    56.5    1    0.00     1.0   71    64           71    +0
2    Ideal Angel          5    61.0    2    0.75     0.0   80    81           81    +1
3    Rattle Mouse         5    62.5    3    1.50     0.0   83    83           83    +0
4    Masters Queen        3    54.0    4    3.75     2.0   70    59           60    -10
5    La Duchesse          6    51.0    5    4.25     0.0   63    57           57    -6
6    Princess Of Fire     4    57.0    6    4.30     1.0   72    66           66    -6
7    With Our Blessing    4    50.5    7    4.80     1.0   48    52           52    +4
8    To The Max           5    56.5    8    4.85     0.0   71    66           66    -5
9    Mayfern              5    52.5    9    4.90     0.0   60    58           58    -2
10   Nippy Sweetie        5    59.0    10   5.90     0.0   76    71           71    -5
11   Opera Swing          4    52.0    11   6.65     1.0   62    55           55    -7
12   Abbey Wood           4    50.5    12   9.15     1.0   54    52           52    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vision On Ice 71 75 71 +4 1.0 -
2 Ideal Angel 80 94 81 +13 0.0 -
3 Rattle Mouse Line 83 85 83 +2 0.0
4 Masters Queen 70 56 60 -4 2.0 -
5 La Duchesse 63 59 57 +2 0.0 -
6 Princess Of Fire 72 75 66 +9 1.0 -
7 With Our Blessing 48 41 52 -11 1.0 -
8 To The Max 71 64 66 -2 0.0 -
9 Mayfern 60 59 58 +1 0.0 -
10 Nippy Sweetie 76 74 71 +3 0.0 -
11 Opera Swing 62 82 55 +27 1.0 -
12 Abbey Wood 54 49 52 -3 1.0 -
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