Official NHA Assessment

Race 6: JONTY CROW MEMORIAL MR 80 HANDICAP (Open)

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Line Horse
Fifth Of July
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 10
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    Tabebuia             3    57.5    1    0.00     9.0   77    53           77    +0
2    Fifth Of July        5    58.5    2    1.10     0.0   77    77           77    +0
3    Twin Turbo           4    58.0    3    1.15     5.0   76    66           66    -10
4    Duke Of Rain         3    57.0    4    3.35     9.0   76    53           66    -10
5    Elusive Swann        4    61.5    5    3.85     5.0   83    70           73    -10
6    Romeo's Magic        7    55.0    6    5.10     0.0   70    66           66    -4
7    Oyster King          5    57.0    7    6.90     0.0   74    70           70    -4
8    Tyrus Express        6    62.0    8    9.70     0.0   84    80           80    -4
9    Fire Lord            3    56.5    9    9.90     9.0   75    51           65    -10
99   Player               3    52.0    99   0.00     9.0   -     42           42    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tabebuia 77 94 77 +17 9.0 -
2 Fifth Of July Line 77 63 77 -14 0.0
3 Twin Turbo 76 88 66 +22 5.0 -
4 Duke Of Rain 76 70 66 +4 9.0 -
5 Elusive Swann 83 72 73 -1 5.0 -
6 Romeo's Magic 70 73 66 +7 0.0 -
7 Oyster King 74 50 70 -20 0.0 -
8 Tyrus Express 84 62 80 -18 0.0 -
9 Fire Lord 75 69 65 +4 9.0 -
99 Player - 84 42 +42 9.0 -
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