Official NHA Assessment

Race 4: GSCT GALLOP MERIT RATED 80 HANDICAP (Open)

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Line Horse
Ultimate Jewel
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
2 / 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    Red Top              5    53.5    1    0.00     0.0   67    64           67    +0
2    Ultimate Jewel       5    58.5    2    1.50     0.0   77    77           77    +0
3    Winchester           2    52.0    3    1.55     0.0   74    64           64    -10
4    Queen Of Fire        3    57.5    4    4.55     5.0   75    62           65    -10
5    The Octagon          2    58.0    5    6.05     0.0   76    73           73    -3
6    Jack In The Green    2    60.0    6    10.05    0.0   80    77           77    -3
7    Hildelita            4    58.0    7    99.00    3.0   76    67           67    -9
99   Captive Moon         6    57.0    99   0.00     0.0   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Red Top 67 70 67 +3 0.0 -
2 Ultimate Jewel Line 77 80 77 +3 0.0
3 Winchester 74 69 64 +5 0.0 -
4 Queen Of Fire 75 71 65 +6 5.0 -
5 The Octagon 76 76 73 +3 0.0 -
6 Jack In The Green 80 80 77 +3 0.0 -
7 Hildelita 76 76 67 +9 3.0 -
99 Captive Moon - 75 71 +4 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