Official NHA Assessment

Race 3: TAB TELEBET 0861 000 822 MAIDEN PLATE (For all Maidens)

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Line Horse
Northern Tune
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
9 / 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    Thambi               5    57.0    1    0.00     0.0   -     43           6     +6
2    Walala Wasala        3    57.5    2    1.80     2.5   63    39           53    -10
3    Gimme Royalty        3    58.5    3    2.80     2.5   57    41           47    -10
4    Northern Tune        4    60.0    4    2.90     0.0   49    49           49    +0
5    Libeccio             5    57.0    5    3.50     0.0   -     43           43    +43
6    Tartarus             2    57.0    6    4.10     1.5   -     40           40    +40
7    Main Mission         2    53.0    7    4.40     1.5   -     32           32    +32
8    Carnelo              6    60.0    8    4.90     0.0   28    49           49    +21
9    Power Mad            3    60.0    9    5.40     2.5   -     44           44    +44
10   Lemme Go             3    60.0    10   5.45     2.5   67    44           57    -10
11   Kwela                4    60.0    11   15.20    0.0   35    49           49    +14
99   Joyous Jubilee (AUS  2    57.0    99   0.00     1.5   -     40           40    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thambi - 55 6 +49 0.0 -
2 Walala Wasala 63 61 53 +8 2.5 -
3 Gimme Royalty 57 49 47 +2 2.5 -
4 Northern Tune Line 49 62 49 +13 0.0
5 Libeccio - 62 43 +19 0.0 -
6 Tartarus - 82 40 +42 1.5 -
7 Main Mission - 71 32 +39 1.5 -
8 Carnelo 28 75 49 +26 0.0 -
9 Power Mad - 42 44 -2 2.5 -
10 Lemme Go 67 54 57 -3 2.5 -
11 Kwela 35 43 49 -6 0.0 -
99 Joyous Jubilee (AUS) - 61 40 +21 1.5 -
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