Official NHA Assessment

Race 1: BETWAY BOOST WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Miraculous Man
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 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    Tiger In Red         3    60.0    1    0.00     9.5   61    62           62    +1
2    Miraculous Man       3    60.0    2    1.75     9.5   62    62           62    +0
3    Midnight Advocator   3    60.0    3    2.25     9.5   61    62           62    +1
4    Grace Upon Grace     2    55.5    4    3.75     6.5   -     59           59    +59
5    Happy Vibes          3    57.5    5    4.00     9.5   64    57           57    -7
6    Miss Tucker          3    57.5    6    4.10     9.5   53    57           57    +4
7    This Time Round      2    60.0    7    4.35     6.5   52    68           68    +16
8    Western Jack         3    60.0    8    6.85     9.5   53    62           62    +9
9    Fly Better           3    57.5    9    10.10    9.5   48    57           57    +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tiger In Red 61 66 62 +4 9.5 -
2 Miraculous Man Line 62 45 62 -17 9.5
3 Midnight Advocator 61 48 62 -14 9.5 -
4 Grace Upon Grace - 60 59 +1 6.5 -
5 Happy Vibes 64 59 57 +2 9.5 -
6 Miss Tucker 53 48 57 -9 9.5 -
7 This Time Round 52 54 68 -14 6.5 -
8 Western Jack 53 50 62 -12 9.5 -
9 Fly Better 48 45 57 -12 9.5 -
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