Official NHA Assessment

Race 7: FREE KIDDIES ENTERTAINMENT 09 DECEMBER FM 76 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Whirlybird
Reference for assessment
Exact Matches
1 / 18
Calculated = Official
Close Matches
4 / 18
Within 2 points
Significant Diffs
12 / 18
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    Alabama Anna         6    59.0    1    0.00     0.0   74    85           74    +0
2    Lady Fallon          4    58.5    2    0.75     3.5   85    81           81    -4
3    Whirlybird           2    58.5    3    1.25     0.0   88    88           88    +0
4    Boom Boom            4    56.0    4    1.45     3.5   80    75           75    -5
5    Summer Of Dreams     2    55.5    5    3.00     0.0   70    80           80    +10
6    Rose Tinted          2    58.0    6    4.50     0.0   84    83           83    -1
7    Quantum              5    59.5    7    5.00     0.0   75    86           86    +11
8    Cerulean Dancer      2    52.5    8    5.05     0.0   61    72           72    +11
9    Golden Aspen         6    59.5    9    5.25     0.0   75    86           86    +11
10   Sigrid Swing         4    56.0    10   5.35     3.5   80    72           72    -8
11   Perilla              5    61.0    11   5.50     0.0   78    89           89    +11
12   Grape Shot           2    56.5    12   6.25     0.0   81    80           80    -1
13   Trentino             2    59.5    13   6.75     0.0   75    86           86    +11
14   Silver Clock         2    56.5    14   8.75     0.0   69    80           80    +11
15   Lorna Lilly          3    55.0    15   11.75    6.0   65    65           65    +0
99   Lady Elliot          2    58.0    99   0.00     0.0   -     83           83    +0
99   Have A Party         3    52.5    99   0.00     6.0   -     60           60    +0
99   Time To The Moon     3    50.5    99   0.00     6.0   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Alabama Anna 74 73 74 -1 0.0 -
2 Lady Fallon 85 100 81 +19 3.5 -
3 Whirlybird Line 88 73 88 -15 0.0
4 Boom Boom 80 81 75 +6 3.5 -
5 Summer Of Dreams 70 65 80 -15 0.0 -
6 Rose Tinted 84 80 83 -3 0.0 -
7 Quantum 75 67 86 -19 0.0 -
8 Cerulean Dancer 61 71 72 -1 0.0 -
9 Golden Aspen 75 66 86 -20 0.0 -
10 Sigrid Swing 80 70 72 -2 3.5 -
11 Perilla 78 89 89 ✓ Match 0.0 -
12 Grape Shot 81 69 80 -11 0.0 -
13 Trentino 75 54 86 -32 0.0 -
14 Silver Clock 69 67 80 -13 0.0 -
15 Lorna Lilly 65 50 65 -15 6.0 -
99 Lady Elliot - 71 83 -12 0.0 -
99 Have A Party - 64 60 +4 6.0 -
99 Time To The Moon - 63 56 +7 6.0 -
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