Official NHA Assessment

Race 3: BET WITH TABGOLD - THE INTELLIGENT BET! OPEN MAIDEN (F & M) (For all Maiden Fillies & Mares.)

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Line Horse
Royal Mermaid
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 9
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    Rani Tarabai         3    61.0    1    0.00     3.5   74    71           71    -3
2    Perfectly Picked     3    56.5    2    0.50     3.5   58    67           67    +9
3    Royal Mermaid        3    61.5    3    1.40     3.5   75    75           75    +0
4    Call Me Harriet      2    59.5    4    1.50     0.0   71    78           78    +7
5    Sheezarocket         2    60.0    5    4.70     0.0   72    76           76    +4
6    Kesari               3    57.0    6    5.60     3.5   66    63           63    -3
7    Natural Law          2    55.5    7    13.30    0.0   -     67           67    +67
8    Winter Glade         3    60.5    8    13.90    3.5   -     70           70    +70
99   Glorious Butterfly   3    58.0    99   0.00     3.5   -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rani Tarabai 74 80 71 +9 3.5 -
2 Perfectly Picked 58 58 67 -9 3.5 -
3 Royal Mermaid Line 75 70 75 -5 3.5
4 Call Me Harriet 71 63 78 -15 0.0 -
5 Sheezarocket 72 62 76 -14 0.0 -
6 Kesari 66 62 63 -1 3.5 -
7 Natural Law - 56 67 -11 0.0 -
8 Winter Glade - 49 70 -21 3.5 -
99 Glorious Butterfly - 66 65 +1 3.5 -
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