Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MR 66 HANDICAP (Open)

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Line Horse
Pacific
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Thunderbird          4    60.0    1    0.00     5.0   66    66           66    +0
2    Together Again       5    56.5    2    0.70     0.0   59    69           69    +10
3    Pacific              4    56.5    3    0.90     5.0   59    59           59    +0
4    Dancing Dora         6    56.0    4    1.65     0.0   58    68           68    +10
5    Oriental Bouquet     4    58.0    5    3.05     5.0   62    62           62    +0
6    Phala Millions       4    54.5    6    3.30     5.0   55    55           55    +0
7    Radiant Heat         3    56.5    7    3.50     4.5   73    60           63    -10
8    Stroke Of Mercy      5    58.5    8    6.25     0.0   63    73           73    +10
99   In The Ether         6    60.5    99   0.00     0.0   -     77           77    +0
99   Nazare               3    61.5    99   0.00     4.5   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thunderbird 66 70 66 +4 5.0 -
2 Together Again 59 55 69 -14 0.0 -
3 Pacific Line 59 50 59 -9 5.0
4 Dancing Dora 58 53 68 -15 0.0 -
5 Oriental Bouquet 62 56 62 -6 5.0 -
6 Phala Millions 55 66 55 +11 5.0 -
7 Radiant Heat 73 72 63 +9 4.5 -
8 Stroke Of Mercy 63 52 73 -21 0.0 -
99 In The Ether - 63 77 -14 0.0 -
99 Nazare - 70 70 ✓ Match 4.5 -
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