Official NHA Assessment

Race 7: TAKE A BET WINA NUMBA NUMBA MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Open Highway
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 11
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    Tamarisk Tree        5    56.0    1    0.00     0.0   83    87           87    +4
2    Gimmealight          3    52.0    2    0.25     1.5   79    76           76    -3
3    Open Highway         4    52.0    3    1.75     0.5   81    81           81    +0
4    Good Queen Bess (GB  4    60.0    4    2.75     0.5   97    96           96    -1
5    Jury's Out           2    58.0    5    3.25     0.0   92    93           93    +1
6    Celestial City       4    60.0    6    3.50     0.5   92    95           95    +3
7    Free Movement        3    56.0    7    6.75     1.5   82    84           84    +2
8    Tamil Tigress        2    54.0    8    7.75     0.0   87    83           83    -4
9    Bold Act             3    54.0    9    8.00     1.5   82    80           80    -2
10   Bonete               3    58.0    10   10.00    1.5   91    88           88    -3
11   The Front Line       4    60.0    11   19.00    0.5   95    94           94    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tamarisk Tree 83 105 87 +18 0.0 -
2 Gimmealight 79 77 76 +1 1.5 -
3 Open Highway Line 81 94 81 +13 0.5
4 Good Queen Bess (GB) 97 97 96 +1 0.5 -
5 Jury's Out 92 85 93 -8 0.0 -
6 Celestial City 92 92 95 -3 0.5 -
7 Free Movement 82 81 84 -3 1.5 -
8 Tamil Tigress 87 77 83 -6 0.0 -
9 Bold Act 82 77 80 -3 1.5 -
10 Bonete 91 85 88 -3 1.5 -
11 The Front Line 95 82 94 -12 0.5 -
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