Official NHA Assessment

Race 4: TOYCO ENGINEERING MAIDEN PLATE (For all Maidens)

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Line Horse
Helsinki
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
11 / 13
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Spelling Bee         2    60.0    1    0.00     0.0   76    76           76    +0
2    Helsinki             2    60.0    2    3.90     0.0   77    77           77    +0
3    Gorgeous Dude        4    58.5    3    4.80     1.5   -     70           70    +70
4    Run To Rio           4    60.0    4    5.40     1.5   80    73           73    -7
5    Catavar              4    60.0    5    6.10     1.5   74    73           73    -1
6    Captain Marsala      2    60.0    6    8.00     0.0   79    76           76    -3
7    Crystal Blue         3    60.0    7    9.10     2.5   -     71           71    +71
8    Isorender            2    60.0    8    9.30     0.0   70    76           76    +6
9    Regina Argento       2    60.0    9    13.70    0.0   62    76           76    +14
10   Russian Writer       3    60.0    10   14.40    2.5   56    71           71    +15
11   Fated Chestnut       3    60.0    11   16.00    2.5   48    71           71    +23
12   Magic Prince         2    60.0    12   21.70    0.0   71    76           76    +5
99   Allrite              3    60.0    99   0.00     2.5   -     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 Spelling Bee 76 86 76 +10 0.0 -
2 Helsinki Line 77 72 77 -5 0.0
3 Gorgeous Dude - 55 70 -15 1.5 -
4 Run To Rio 80 71 73 -2 1.5 -
5 Catavar 74 64 73 -9 1.5 -
6 Captain Marsala 79 68 76 -8 0.0 -
7 Crystal Blue - 47 71 -24 2.5 -
8 Isorender 70 63 76 -13 0.0 -
9 Regina Argento 62 55 76 -21 0.0 -
10 Russian Writer 56 47 71 -24 2.5 -
11 Fated Chestnut 48 53 71 -18 2.5 -
12 Magic Prince 71 66 76 -10 0.0 -
99 Allrite - 63 71 -8 2.5 -
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