Official NHA Assessment

Race 4: CELEBRATING CENTURION MEMBER NANCY HOSSACK'S BIRTHDAY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Thingamabob
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
3 / 15
Within 2 points
Significant Diffs
11 / 15
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    Clair De Lune        2    57.0    1    0.00     1.0   -     71           6     +6
2    Thingamabob          3    60.0    2    1.50     2.0   75    75           75    +0
3    Queen Regent         2    53.0    3    1.70     1.0   -     63           63    +63
4    Eisteddfod           2    57.0    4    3.70     1.0   -     71           71    +71
5    Heritage Ridge       3    60.0    5    4.20     2.0   76    75           75    -1
6    Apricity             2    54.5    6    5.20     1.0   -     66           66    +66
7    Gin Palace           2    57.0    7    5.60     1.0   -     71           71    +71
8    Red Taffety          2    57.0    8    6.00     1.0   -     71           71    +71
9    Raffish Trend        2    57.0    9    6.30     1.0   -     71           71    +71
10   Miss William         3    60.0    10   8.55     2.0   75    75           75    +0
11   Husuni Kubwa         3    60.0    11   8.65     2.0   -     75           75    +75
12   Fiery Frolic         2    57.0    12   9.15     1.0   -     71           71    +71
13   Gimme The Power      2    57.0    13   11.90    1.0   -     71           71    +71
14   Ice Spear            2    57.0    14   12.10    1.0   -     71           71    +71
15   Giddy Up Grace       2    57.0    15   18.85    1.0   -     71           71    +71
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Clair De Lune - 84 6 +78 1.0 -
2 Thingamabob Line 75 73 75 -2 2.0
3 Queen Regent - 94 63 +31 1.0 -
4 Eisteddfod - 80 71 +9 1.0 -
5 Heritage Ridge 76 59 75 -16 2.0 -
6 Apricity - 74 66 +8 1.0 -
7 Gin Palace - 84 71 +13 1.0 -
8 Red Taffety - 77 71 +6 1.0 -
9 Raffish Trend - 73 71 +2 1.0 -
10 Miss William 75 84 75 +9 2.0 -
11 Husuni Kubwa - 67 75 -8 2.0 -
12 Fiery Frolic - 75 71 +4 1.0 -
13 Gimme The Power - 69 71 -2 1.0 -
14 Ice Spear - 64 71 -7 1.0 -
15 Giddy Up Grace - 63 71 -8 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