Official NHA Assessment

Race 6: RACING TODAY FM 66 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Rockie Blue
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 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    Oncidium             2    61.0    1    0.00     0.0   76    78           76    +0
2    Rockie Blue          3    60.0    2    0.25     2.5   71    71           71    +0
3    Nautical Landing     3    58.5    3    0.50     2.5   63    73           73    +10
4    Lady Luck            4    60.0    4    3.00     1.0   66    76           76    +10
5    Blue Palace          2    61.5    5    3.05     0.0   69    81           81    +12
6    Ocean Flame          2    62.0    6    3.15     0.0   75    82           82    +7
7    Endeared             2    57.0    7    3.20     0.0   70    72           72    +2
8    Royal Mermaid        3    62.0    8    3.25     2.5   70    77           77    +7
9    Colorama             6    54.0    9    4.25     0.0   54    65           65    +11
10   Elusive Bomba        3    56.5    10   5.50     2.5   59    64           64    +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oncidium 76 78 76 +2 0.0 -
2 Rockie Blue Line 71 71 71 ✓ Match 2.5
3 Nautical Landing 63 63 73 -10 2.5 -
4 Lady Luck 66 65 76 -11 1.0 -
5 Blue Palace 69 67 81 -14 0.0 -
6 Ocean Flame 75 73 82 -9 0.0 -
7 Endeared 70 68 72 -4 0.0 -
8 Royal Mermaid 70 70 77 -7 2.5 -
9 Colorama 54 54 65 -11 0.0 -
10 Elusive Bomba 59 59 64 -5 2.5 -
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