Official NHA Assessment

Race 1: OKAPI LADIES INTERNATIONAL MAIDEN PLATE (For all Maidens)

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Line Horse
Gravity
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
10 / 12
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    Gravity              4    63.0    1    0.00     6.0   82    82           82    +0
2    Riverstone           2    63.0    2    2.00     3.5   -     87           87    +87
3    The Us Of A          3    63.0    3    2.05     5.0   -     84           84    +84
4    Love Shack           2    61.5    4    2.35     3.5   78    84           84    +6
5    Wissa's On Fire      4    63.0    5    4.35     6.0   -     82           82    +82
6    Gimmethelimelight    2    61.5    6    4.45     3.5   80    84           84    +4
7    See You In A Bit     4    61.5    7    6.20     6.0   79    79           79    +0
8    Connery              4    63.0    8    8.45     6.0   79    82           82    +3
9    Noon Day Gun         4    63.0    9    8.95     6.0   82    82           82    +0
10   Rougarouin           4    63.0    10   9.05     6.0   73    82           82    +9
11   Roll Of The Dice     3    63.0    11   10.30    5.0   -     84           84    +84
12   Ischyro              3    63.0    12   13.55    5.0   -     84           84    +84
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gravity Line 82 63 82 -19 6.0
2 Riverstone - 84 87 -3 3.5 -
3 The Us Of A - 104 84 +20 5.0 -
4 Love Shack 78 69 84 -15 3.5 -
5 Wissa's On Fire - 71 82 -11 6.0 -
6 Gimmethelimelight 80 68 84 -16 3.5 -
7 See You In A Bit 79 67 79 -12 6.0 -
8 Connery 79 96 82 +14 6.0 -
9 Noon Day Gun 82 66 82 -16 6.0 -
10 Rougarouin 73 69 82 -13 6.0 -
11 Roll Of The Dice - 81 84 -3 5.0 -
12 Ischyro - 54 84 -30 5.0 -
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