Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Unyielding
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
1 / 14
Within 2 points
Significant Diffs
11 / 14
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    Writteninthesand     3    60.0    1    0.00     3.0   67    60           60    -7
2    Dame Colleen         3    60.0    2    3.00     3.0   48    62           62    +14
3    Southern Style       5    60.0    3    3.50     0.0   61    67           67    +6
4    Unyielding           2    60.0    4    3.75     0.0   67    67           67    +0
5    Elusive Fire         4    60.0    5    5.85     1.5   51    63           63    +12
6    Leahlicious          3    60.0    6    9.35     3.0   -     60           60    +60
7    Cilantro             3    60.0    7    10.10    3.0   62    60           60    -2
8    Wow                  2    60.0    8    11.70    0.0   70    66           66    -4
9    Eurydice             2    60.0    9    12.30    0.0   48    66           66    +18
10   Together Again       5    60.0    10   14.30    0.0   56    66           66    +10
11   Kungfoo Lightning    2    60.0    11   19.55    0.0   48    66           66    +18
12   Three Bells          3    60.0    12   28.00    3.0   47    60           60    +13
13   Double Joy           2    60.0    13   30.00    0.0   64    66           66    +2
14   Efficient Trader     2    60.0    14   99.97    0.0   65    66           66    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Writteninthesand 67 57 60 -3 3.0 -
2 Dame Colleen 48 46 62 -16 3.0 -
3 Southern Style 61 54 67 -13 0.0 -
4 Unyielding Line 67 88 67 +21 0.0
5 Elusive Fire 51 63 63 ✓ Match 1.5 -
6 Leahlicious - 42 60 -18 3.0 -
7 Cilantro 62 54 60 -6 3.0 -
8 Wow 70 70 66 +4 0.0 -
9 Eurydice 48 48 66 -18 0.0 -
10 Together Again 56 55 66 -11 0.0 -
11 Kungfoo Lightning 48 38 66 -28 0.0 -
12 Three Bells 47 43 60 -17 3.0 -
13 Double Joy 64 44 66 -22 0.0 -
14 Efficient Trader 65 57 66 -9 0.0 -
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