Official NHA Assessment

Race 2: TAB TELEBET 0861 000 822 OPEN MAIDEN (For all Maidens)

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Line Horse
Come On You Spurs
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Erimitage            4    60.0    1    0.00     7.0   64    49           49    -15
2    Donny's Boy          3    55.5    2    2.00     9.0   72    39           62    -10
3    Sundrop              6    53.0    3    3.25     0.0   50    51           51    +1
4    Come On You Spurs    2    57.5    4    3.35     0.0   59    59           59    +0
5    Home Reef            3    59.0    5    3.85     9.0   -     44           44    +44
6    Mayor Of Merrivale   2    59.0    6    4.85     0.0   61    61           61    +0
7    Dirty Mimosa         2    53.0    7    9.60     0.0   67    49           57    -10
8    Natural Wonder       3    51.0    8    14.60    9.0   58    27           48    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Erimitage 64 62 49 +13 7.0 -
2 Donny's Boy 72 68 62 +6 9.0 -
3 Sundrop 50 48 51 -3 0.0 -
4 Come On You Spurs Line 59 51 59 -8 0.0
5 Home Reef - 87 44 +43 9.0 -
6 Mayor Of Merrivale 61 59 61 -2 0.0 -
7 Dirty Mimosa 67 56 57 -1 0.0 -
8 Natural Wonder 58 55 48 +7 9.0 -
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