Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Instant Attraction
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
11 / 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    Hearts On Fire       3    58.0    1    0.00     6.0   -     77           6     +6
2    Shes Everything      3    58.0    2    4.50     6.0   76    77           77    +1
3    Instant Attraction   3    56.5    3    5.00     6.0   74    74           74    +0
4    Empress Wu           3    58.5    4    6.30     6.0   67    78           78    +11
5    Devilishlygorgeous   4    60.0    5    6.60     3.0   60    87           87    +27
6    Beverly Baby         3    58.0    6    9.20     6.0   50    77           77    +27
7    Plum Blossom         3    60.0    7    22.50    6.0   53    81           81    +28
8    Bella's Charm        3    58.0    8    23.25    6.0   62    77           77    +15
99   Emerald Gold         4    60.0    99   0.00     3.0   -     87           87    +0
99   Q For Love           3    58.0    99   0.00     6.0   -     77           77    +0
99   The Mightiest        3    58.0    99   0.00     6.0   -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hearts On Fire - 65 6 +59 6.0 -
2 Shes Everything 76 71 77 -6 6.0 -
3 Instant Attraction Line 74 60 74 -14 6.0
4 Empress Wu 67 61 78 -17 6.0 -
5 Devilishlygorgeous 60 64 87 -23 3.0 -
6 Beverly Baby 50 53 77 -24 6.0 -
7 Plum Blossom 53 53 81 -28 6.0 -
8 Bella's Charm 62 59 77 -18 6.0 -
99 Emerald Gold - 34 87 -53 3.0 -
99 Q For Love - 60 77 -17 6.0 -
99 The Mightiest - 70 77 -7 6.0 -
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