Official NHA Assessment

Race 3: OFF THE RAILS MAIDEN PLATE (For all Maidens)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
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    Nelson Bay           4    56.0    1    0.00     0.5   -     -            -     +0
2    Mystery Cache        2    56.0    2    1.30     0.0   -     -            -     +0
3    Purpleninjaturtle    4    56.0    3    2.05     0.5   -     -            -     +0
4    Medal Of Freedom     3    60.0    4    2.10     1.5   -     -            -     +0
5    King Of Seville      2    56.0    5    2.50     0.0   -     -            -     +0
6    Doin' Time           5    60.0    6    3.30     0.0   64    -            59    -5
7    Tiger Spring         2    58.5    7    3.90     0.0   61    -            55    -6
8    King Bavarian        5    60.0    8    5.30     0.0   55    -            48    -7
9    Paschals Njaro       3    60.0    9    9.70     1.5   30    -            22    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nelson Bay - 90 - +90 0.5 -
2 Mystery Cache - 70 - +70 0.0 -
3 Purpleninjaturtle - 78 - +78 0.5 -
4 Medal Of Freedom - 73 - +73 1.5 -
5 King Of Seville - 65 - +65 0.0 -
6 Doin' Time 64 54 59 -5 0.0 -
7 Tiger Spring 61 57 55 +2 0.0 -
8 King Bavarian 55 67 48 +19 0.0 -
9 Paschals Njaro 30 35 22 +13 1.5 -
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