Official NHA Assessment

Race 2: 4RACING.TV OPEN MAIDEN (F & M) (For Maidens F&M. R15 000 Win bonus ROA Members)

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Line Horse
Winning Grace
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
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    Global Lady          3    61.0    1    0.00     4.5   -     77           6     +6
2    String Of Lights     4    54.5    2    0.50     5.0   61    63           63    +2
3    Winning Grace        2    53.0    3    2.25     3.0   64    64           64    +0
4    Sunset Roar          2    53.5    4    2.30     3.0   60    65           65    +5
5    Venetian Moonlight   3    55.5    5    4.05     4.5   64    66           66    +2
6    Tune Again           6    53.5    6    6.30     0.0   54    71           71    +17
7    Kamaria              3    61.0    7    11.55    4.5   -     77           77    +77
8    Hat's Lady           4    61.0    8    13.05    5.0   -     76           76    +76
9    Ntombencane          3    51.5    9    18.30    4.5   43    58           58    +15
10   Roadlesstravelled    2    51.5    10   18.40    3.0   50    61           61    +11
11   Lava Fields          3    52.0    11   18.90    4.5   45    59           59    +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Global Lady - 65 6 +59 4.5 -
2 String Of Lights 61 66 63 +3 5.0 -
3 Winning Grace Line 64 62 64 -2 3.0
4 Sunset Roar 60 57 65 -8 3.0 -
5 Venetian Moonlight 64 58 66 -8 4.5 -
6 Tune Again 54 50 71 -21 0.0 -
7 Kamaria - 53 77 -24 4.5 -
8 Hat's Lady - 64 76 -12 5.0 -
9 Ntombencane 43 38 58 -20 4.5 -
10 Roadlesstravelled 50 47 61 -14 3.0 -
11 Lava Fields 45 42 59 -17 4.5 -
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