Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING TUESDAY 12 JULY FM 76 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Stormy Lass
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 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    Samoa                10   58.0    1    0.00     0.0   72    76           72    +0
2    Love Bite            3    59.5    2    0.25     1.5   76    76           76    +0
3    Stormy Lass          3    54.5    3    1.50     1.5   66    66           66    +0
4    Verinova             4    54.5    4    1.90     2.0   65    65           65    +0
5    Rose For Trippi      2    54.0    5    2.00     0.5   79    67           69    -10
6    Feather The Nest     4    55.5    6    2.75     2.0   67    67           67    +0
7    Spanish Song         4    56.5    7    4.00     2.0   69    69           69    +0
8    Mercer Girl          6    50.5    8    5.00     0.0   55    61           61    +6
9    Call The Wind        3    60.0    9    6.50     1.5   77    77           77    +0
10   Fennec Fox           5    61.0    10   9.50     0.0   93    82           83    -10
99   Risky Business       3    58.0    99   0.00     1.5   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Samoa 72 64 72 -8 0.0 -
2 Love Bite 76 65 76 -11 1.5 -
3 Stormy Lass Line 66 61 66 -5 1.5
4 Verinova 65 64 65 -1 2.0 -
5 Rose For Trippi 79 80 69 +11 0.5 -
6 Feather The Nest 67 54 67 -13 2.0 -
7 Spanish Song 69 60 69 -9 2.0 -
8 Mercer Girl 55 53 61 -8 0.0 -
9 Call The Wind 77 56 77 -21 1.5 -
10 Fennec Fox 93 64 83 -19 0.0 -
99 Risky Business - 75 73 +2 1.5 -
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