Official NHA Assessment

Race 1: NEW TURF CARRIERS MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    Alto Alex            2    56.0    1    0.00     0.0   -     -            -     +0
2    Aspoestertjie        5    52.0    2    2.00     0.0   -     -            -     +0
3    Cantfoolme           2    56.0    3    3.10     0.0   -     -            -     +0
4    Act Of Mercy         2    56.0    4    3.15     0.0   -     -            -     +0
5    Devils And Dust      2    56.0    5    3.40     0.0   -     -            -     +0
6    Royal Venus          2    56.0    6    5.40     0.0   -     -            -     +0
7    Minstrel Gallery     2    56.0    7    6.50     0.0   -     -            -     +0
8    Bay Of Dreams        3    60.0    8    8.60     0.5   53    -            46    -7
9    Deltron Energy       3    60.0    9    19.20    0.5   48    -            40    -8
10   Roy's Wolf           3    60.0    10   27.90    0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Alto Alex - 79 - +79 0.0 -
2 Aspoestertjie - 68 - +68 0.0 -
3 Cantfoolme - 51 - +51 0.0 -
4 Act Of Mercy - 58 - +58 0.0 -
5 Devils And Dust - 52 - +52 0.0 -
6 Royal Venus - 50 - +50 0.0 -
7 Minstrel Gallery - 48 - +48 0.0 -
8 Bay Of Dreams 53 43 46 -3 0.5 -
9 Deltron Energy 48 48 40 +8 0.5 -
10 Roy's Wolf - - - ✓ Match 0.5 -
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