Official NHA Assessment

Race 3: RACING240 MAIDEN PLATE (F & M) (For Maiden F&M)

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Line Horse
Royal Mermaid
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
5 / 7
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    Royal Missy          2    58.0    1    0.00     0.0   72    81           78    +6
2    Royal Mermaid        3    60.0    2    2.75     7.0   73    73           73    +0
3    Oh Mandy             3    60.0    3    9.25     7.0   63    71           71    +8
4    Cedarpeak            3    56.0    4    10.50    7.0   45    63           63    +18
5    Lacryma Christi      2    58.0    5    15.25    0.0   60    81           81    +21
6    Lilic Heart          2    58.0    6    27.00    0.0   -     81           81    +81
99   Golden Alexia        3    60.0    99   0.00     7.0   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Royal Missy 72 83 78 +5 0.0 -
2 Royal Mermaid Line 73 70 73 -3 7.0
3 Oh Mandy 63 64 71 -7 7.0 -
4 Cedarpeak 45 50 63 -13 7.0 -
5 Lacryma Christi 60 59 81 -22 0.0 -
6 Lilic Heart - 40 81 -41 0.0 -
99 Golden Alexia - 56 71 -15 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