Official NHA Assessment

Race 9: NEXT VAAL RACEMEETING TUESDAY 9 APRIL MR 68 HANDICAP (Open)

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Line Horse
Gilda Gray
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
9 / 12
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    His Master's Voice   2    59.5    1    0.00     0.0   67    74           67    +0
2    Gilda Gray           3    58.0    2    0.25     3.5   64    64           64    +0
3    Guy Alexander        3    55.5    3    0.75     3.5   62    63           63    +1
4    Hakas Krakas         3    59.5    4    1.25     3.5   67    71           71    +4
5    Jp Two Thousand      3    59.5    5    1.50     3.5   67    70           70    +3
6    Flag Bearer          3    59.0    6    2.25     3.5   66    69           69    +3
7    Copper John          4    57.0    7    3.00     1.5   77    68           68    -9
8    Green Sceptre        2    50.5    8    5.25     0.0   57    56           56    -1
9    Volte Face           3    59.5    9    5.50     3.5   67    67           67    +0
10   Lorna Lilly          3    55.5    10   6.00     3.5   58    59           59    +1
11   Eiger Sanction       3    60.5    11   14.00    3.5   76    69           69    -7
12   Summerland           5    56.0    12   27.75    0.0   60    67           67    +7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 His Master's Voice 67 69 67 +2 0.0 -
2 Gilda Gray Line 64 64 64 ✓ Match 3.5
3 Guy Alexander 62 72 63 +9 3.5 -
4 Hakas Krakas 67 65 71 -6 3.5 -
5 Jp Two Thousand 67 61 70 -9 3.5 -
6 Flag Bearer 66 60 69 -9 3.5 -
7 Copper John 77 61 68 -7 1.5 -
8 Green Sceptre 57 50 56 -6 0.0 -
9 Volte Face 67 66 67 -1 3.5 -
10 Lorna Lilly 58 50 59 -9 3.5 -
11 Eiger Sanction 76 79 69 +10 3.5 -
12 Summerland 60 45 67 -22 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