Official NHA Assessment

Race 4: 4RACING.TV MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Rain Bird
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 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    Ellorix              4    60.0    1    0.00     2.0   72    62           62    -10
2    String Of Lights     4    60.0    2    1.50     2.0   62    62           62    +0
3    Rain Bird            2    58.5    3    4.00     0.5   62    62           62    +0
4    Green Fame           4    60.0    4    4.75     2.0   62    62           62    +0
5    Quiet Whisper        2    60.0    5    5.00     0.5   34    65           65    +31
6    Venetian Moonlight   3    56.0    6    5.25     1.5   58    55           55    -3
7    Sweet Cake           2    57.0    7    5.50     0.5   -     59           59    +59
8    Belltown             3    60.0    8    9.25     1.5   -     63           63    +63
9    Carved In Stone      4    60.0    9    22.75    2.0   40    62           62    +22
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ellorix 72 100 62 +38 2.0 -
2 String Of Lights 62 66 62 +4 2.0 -
3 Rain Bird Line 62 70 62 +8 0.5
4 Green Fame 62 56 62 -6 2.0 -
5 Quiet Whisper 34 53 65 -12 0.5 -
6 Venetian Moonlight 58 58 55 +3 1.5 -
7 Sweet Cake - 60 59 +1 0.5 -
8 Belltown - 45 63 -18 1.5 -
9 Carved In Stone 40 41 62 -21 2.0 -
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