Official NHA Assessment

Race 4: BETWAY MAIDEN PLATE (F & M) (For Maiden F & M)

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Line Horse
Rendevous In Rio
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    A Good Heart         2    58.0    1    0.00     7.0   -     67           6     +6
2    Rendevous In Rio     2    60.0    2    1.10     7.0   71    71           71    +0
3    Fire In Her Soul     2    58.0    3    5.10     7.0   -     67           67    +67
4    Power Of Pearls      2    58.0    4    5.90     7.0   -     67           67    +67
5    Raceway              2    58.0    5    6.00     7.0   80    67           70    -10
6    Chilli Marmalade     5    56.0    6    7.80     0.0   57    77           77    +20
7    Inspiration          2    58.0    7    8.20     7.0   -     67           67    +67
8    Sapphire Storm       2    58.0    8    19.20    7.0   -     67           67    +67
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 A Good Heart - 84 6 +78 7.0 -
2 Rendevous In Rio Line 71 71 71 ✓ Match 7.0
3 Fire In Her Soul - 88 67 +21 7.0 -
4 Power Of Pearls - 73 67 +6 7.0 -
5 Raceway 80 74 70 +4 7.0 -
6 Chilli Marmalade 57 48 77 -29 0.0 -
7 Inspiration - 79 67 +12 7.0 -
8 Sapphire Storm - 35 67 -32 7.0 -
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