Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING TUESDAY 26 JULY CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Absolute Value
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
2 / 14
Within 2 points
Significant Diffs
8 / 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    Legislate's Dance    4    60.0    1    0.00     0.5   68    70           70    +2
2    Absolute Value       3    54.0    2    1.60     1.0   60    60           60    +0
3    Just A Memory        3    60.0    3    1.70     1.0   72    72           72    +0
4    Silver Stardust      4    58.0    4    2.75     0.5   64    68           68    +4
5    Wondering Star       3    58.0    5    2.85     1.0   68    67           67    -1
6    Java House           4    53.5    6    4.00     0.5   61    58           58    -3
7    Golden Spiral        6    51.5    7    6.00     0.0   55    54           54    -1
8    Just Be Nice         3    55.5    8    6.25     1.0   69    60           60    -9
9    Fasinada             4    51.5    9    6.50     0.5   55    53           53    -2
10   Nasiriyah            3    52.0    10   8.00     1.0   65    53           55    -10
11   English Primrose     3    50.0    11   8.25     1.0   59    49           49    -10
12   Stupefy              5    54.5    12   8.50     0.0   52    60           60    +8
13   Queen Bomi           4    55.5    13   13.50    0.5   64    61           61    -3
99   Quest from Afar      3    55.5    99   0.00     1.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Legislate's Dance 68 81 70 +11 0.5 -
2 Absolute Value Line 60 84 60 +24 1.0
3 Just A Memory 72 67 72 -5 1.0 -
4 Silver Stardust 64 64 68 -4 0.5 -
5 Wondering Star 68 67 67 ✓ Match 1.0 -
6 Java House 61 52 58 -6 0.5 -
7 Golden Spiral 55 51 54 -3 0.0 -
8 Just Be Nice 69 73 60 +13 1.0 -
9 Fasinada 55 52 53 -1 0.5 -
10 Nasiriyah 65 46 55 -9 1.0 -
11 English Primrose 59 58 49 +9 1.0 -
12 Stupefy 52 50 60 -10 0.0 -
13 Queen Bomi 64 58 61 -3 0.5 -
99 Quest from Afar - 67 60 +7 1.0 -
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