Official NHA Assessment

Race 3: #YOUCANBETONUS! MAIDEN PLATE (For all Maidens)

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Line Horse
Pompeii Shield
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 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    Status               3    60.0    1    0.00     4.0   -     62           6     +6
2    Top Floor            2    60.0    2    1.50     0.0   -     73           73    +73
3    Pompeii Shield       4    60.0    3    2.10     2.0   69    69           69    +0
4    Gimmethespotlight    3    60.0    4    2.60     4.0   -     64           64    +64
5    Quevano              2    60.0    5    3.60     0.0   72    71           71    -1
6    Forever Red          3    60.0    6    5.80     4.0   64    62           62    -2
7    Cronus               3    60.0    7    6.80     4.0   67    62           62    -5
8    Second To Nunn       2    58.5    8    14.80    0.0   70    67           67    -3
9    Scented Path         3    60.0    9    19.80    4.0   -     62           62    +62
10   Flower Road          3    60.0    10   35.00    4.0   -     62           62    +62
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Status - 75 6 +69 4.0 -
2 Top Floor - 85 73 +12 0.0 -
3 Pompeii Shield Line 69 69 69 ✓ Match 2.0
4 Gimmethespotlight - 80 64 +16 4.0 -
5 Quevano 72 70 71 -1 0.0 -
6 Forever Red 64 69 62 +7 4.0 -
7 Cronus 67 65 62 +3 4.0 -
8 Second To Nunn 70 67 67 ✓ Match 0.0 -
9 Scented Path - 52 62 -10 4.0 -
10 Flower Road - - 62 -62 4.0 -
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