Official NHA Assessment

Race 2: NATHAN KOTZEN RACING MAIDEN PLATE (For all Maidens)

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Line Horse
Ice Kingdom
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
1 / 14
Within 2 points
Significant Diffs
12 / 14
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    Arividicio           5    58.0    1    0.00     0.0   90    88           70    -20
2    Quandary             5    58.0    2    0.05     0.0   -     88           88    +88
3    Lazy Guy             4    60.0    3    1.15     11.0  70    70           70    +0
4    Imperial Order       3    58.0    4    2.15     9.5   -     69           69    +69
5    Ice Kingdom          2    58.0    5    5.05     6.5   75    75           75    +0
6    Captain Spirit       3    55.5    6    6.95     9.5   -     64           64    +64
7    One Irish Rover      5    56.5    7    7.25     0.0   64    85           85    +21
8    Simply Unusual       3    58.0    8    7.95     9.5   -     69           69    +69
9    Cash Crusade         2    58.0    9    9.25     6.5   -     75           75    +75
10   Meetatthewindsor     5    58.0    10   9.40     0.0   -     88           88    +88
11   Flaming Drum         3    58.0    11   14.30    9.5   -     69           69    +69
12   Bucheparus           3    58.0    12   34.70    9.5   -     69           69    +69
13   Declaration Of War   5    60.0    13   99.99    0.0   52    92           92    +40
99   Tartarus             2    58.0    99   0.00     6.5   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arividicio 90 50 70 -20 0.0 -
2 Quandary - 88 88 ✓ Match 0.0 -
3 Lazy Guy 70 61 70 -9 11.0 -
4 Imperial Order - 78 69 +9 9.5 -
5 Ice Kingdom Line 75 80 75 +5 6.5
6 Captain Spirit - 73 64 +9 9.5 -
7 One Irish Rover 64 65 85 -20 0.0 -
8 Simply Unusual - - 69 -69 9.5 -
9 Cash Crusade - 68 75 -7 6.5 -
10 Meetatthewindsor - 76 88 -12 0.0 -
11 Flaming Drum - 50 69 -19 9.5 -
12 Bucheparus - - 69 -69 9.5 -
13 Declaration Of War 52 52 92 -40 0.0 -
99 Tartarus - 82 75 +7 6.5 -
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