Official NHA Assessment

Race 6: TAB TELEBET 0861 000 822 FM 70 HANDICAP (F & M) (Fillies and Mares)

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Line Horse
Silver Slippers
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
7 / 13
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    Opulence             3    59.5    1    0.00     5.0   69    65           69    +0
2    Silver Slippers      3    58.0    2    1.25     5.0   66    66           66    +0
2    Demigod              3    61.0    2    1.25     5.0   72    72           72    +0
4    Saint Anastasia      3    59.0    4    1.50     5.0   68    67           67    -1
5    Owlette              4    56.0    5    2.75     2.5   62    65           65    +3
6    Opera Swing          4    56.0    6    2.85     2.5   62    65           65    +3
7    Mrs Hotline          5    56.5    7    3.10     0.0   63    71           71    +8
8    To The Max           5    58.0    8    3.15     0.0   66    74           74    +8
9    Alaskan Fate         5    59.5    9    4.15     0.0   69    76           76    +7
10   Meeneera             4    57.5    10   5.65     2.5   65    66           66    +1
11   Sultanah             5    61.0    11   6.15     0.0   72    78           78    +6
12   Libran Lana          3    53.0    12   8.40     5.0   56    52           52    -4
13   Colour Coded         3    52.0    13   53.90    5.0   54    50           50    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Opulence 69 71 69 +2 5.0 -
2 Silver Slippers Line 66 63 66 -3 5.0
2 Demigod 72 67 72 -5 5.0 -
4 Saint Anastasia 68 63 67 -4 5.0 -
5 Owlette 62 56 65 -9 2.5 -
6 Opera Swing 62 82 65 +17 2.5 -
7 Mrs Hotline 63 56 71 -15 0.0 -
8 To The Max 66 64 74 -10 0.0 -
9 Alaskan Fate 69 66 76 -10 0.0 -
10 Meeneera 65 52 66 -14 2.5 -
11 Sultanah 72 59 78 -19 0.0 -
12 Libran Lana 56 51 52 -1 5.0 -
13 Colour Coded 54 54 50 +4 5.0 -
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