Official NHA Assessment

Race 2: BETWAY TOTE REWARDS CLUB MAIDEN PLATE (3 year-old Fillies) (For Maiden 3yo F R15 000 WIN BONUS RA MEMBERS)

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Line Horse
Happy Mo
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 8
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    Whirlybird           2    58.5    1    0.00     6.5   78    3            3     -75
2    Woman Of Power       4    60.0    2    1.70     11.0  -     -3           -     +0
3    Happy Mo             3    60.0    3    4.30     9.5   -     -            -     +0
4    One Religion         2    60.0    4    6.80     6.5   -     6            6     +6
5    Arctic Commander     2    60.0    5    9.10     6.5   75    6            65    -10
6    Rugger Lover         2    60.0    6    11.00    6.5   64    6            54    -10
7    Mia Barca            2    60.0    7    13.75    6.5   67    6            57    -10
8    Azimuth              3    60.0    8    15.50    9.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Whirlybird 78 73 3 +70 6.5 -
2 Woman Of Power - 92 - +92 11.0 -
3 Happy Mo Line - 89 - +89 9.5
4 One Religion - 78 6 +72 6.5 -
5 Arctic Commander 75 73 65 +8 6.5 -
6 Rugger Lover 64 79 54 +25 6.5 -
7 Mia Barca 67 55 57 -2 6.5 -
8 Azimuth - 53 - +53 9.5 -
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