Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Last Survivor
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 10
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    Covert Operator      6    60.0    1    0.00     0.0   64    80           70    +6
2    Wind Water           3    59.0    2    0.30     7.5   -     63           63    +63
3    Bowl First           3    59.0    3    1.55     7.5   -     63           63    +63
4    Last Survivor        2    59.0    4    2.85     5.0   68    68           68    +0
5    Fort Apache          2    59.0    5    4.85     5.0   74    68           68    -6
6    Namaqua Red          2    59.0    6    7.10     5.0   61    68           68    +7
7    Stella Brillante     2    59.0    7    8.90     5.0   66    68           68    +2
8    Blyde River          4    60.0    8    9.70     9.0   46    62           62    +16
99   Tincture Time        3    59.0    99   0.00     7.5   -     63           63    +0
99   Egyptian King        3    59.0    99   0.00     7.5   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Covert Operator 64 77 70 +7 0.0 -
2 Wind Water - 89 63 +26 7.5 -
3 Bowl First - 78 63 +15 7.5 -
4 Last Survivor Line 68 64 68 -4 5.0
5 Fort Apache 74 63 68 -5 5.0 -
6 Namaqua Red 61 59 68 -9 5.0 -
7 Stella Brillante 66 57 68 -11 5.0 -
8 Blyde River 46 48 62 -14 9.0 -
99 Tincture Time - 53 63 -10 7.5 -
99 Egyptian King - - 63 -63 7.5 -
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