Official NHA Assessment

Race 7: TABGOLD SCORE 6 FM 73 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Emerald Green
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Rafeef's Choice      5    58.5    1    0.00     0.0   70    90           70    +0
2    Emerald Green        4    59.5    2    1.90     10.0  72    72           72    +0
3    Dawn Surprise        4    58.0    3    2.00     10.0  69    69           69    +0
4    Million Voices       2    60.5    4    2.40     5.5   85    83           83    -2
5    Princess Hannah      4    59.5    5    2.55     10.0  72    72           72    +0
6    Chelsea Flower       6    57.5    6    2.80     0.0   71    88           88    +17
7    Heirloom             4    58.0    7    2.90     10.0  69    69           69    +0
8    Avernian Goddess     3    60.0    8    3.40     8.5   84    76           76    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rafeef's Choice 70 71 70 +1 0.0 -
2 Emerald Green Line 72 75 72 +3 10.0
3 Dawn Surprise 69 79 69 +10 10.0 -
4 Million Voices 85 77 83 -6 5.5 -
5 Princess Hannah 72 93 72 +21 10.0 -
6 Chelsea Flower 71 77 88 -11 0.0 -
7 Heirloom 69 67 69 -2 10.0 -
8 Avernian Goddess 84 91 76 +15 8.5 -
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