Official NHA Assessment

Race 9: RACEHORSE OWNERS ASSOCIATION MR 74 HANDICAP (Open)

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Line Horse
Flag Bearer
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 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    Heather's Boy        3    60.0    1    0.00     8.0   90    80           90    +0
2    Bacchus              3    59.0    2    0.50     8.0   88    83           83    -5
3    Flag Bearer          3    51.0    3    3.00     8.0   64    64           64    +0
4    Safe Space           5    59.0    4    4.50     0.0   72    94           94    +22
5    Full Go              6    53.0    5    5.75     0.0   60    82           82    +22
6    Laughing William     5    60.5    6    10.25    0.0   75    97           97    +22
7    Thambi               5    56.0    7    11.00    0.0   71    88           88    +17
8    Cerulean Dancer      2    58.5    8    11.75    0.0   71    93           93    +22
9    Phantom Express      4    57.5    9    14.25    5.0   70    81           81    +11
10   Clarkson             4    60.5    10   14.50    5.0   75    87           87    +12
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Heather's Boy 90 102 90 +12 8.0 -
2 Bacchus 88 101 83 +18 8.0 -
3 Flag Bearer Line 64 60 64 -4 8.0
4 Safe Space 72 83 94 -11 0.0 -
5 Full Go 60 59 82 -23 0.0 -
6 Laughing William 75 75 97 -22 0.0 -
7 Thambi 71 55 88 -33 0.0 -
8 Cerulean Dancer 71 71 93 -22 0.0 -
9 Phantom Express 70 76 81 -5 5.0 -
10 Clarkson 75 75 87 -12 5.0 -
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