Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION MR 68 HANDICAP (Open)

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Line Horse
Guarding The Wall
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 9
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    Holocene             4    60.0    1    0.00     5.0   69    67           69    +0
2    Travel Master        4    62.0    2    0.25     5.0   72    71           71    -1
3    Guarding The Wall    4    58.5    3    3.50     5.0   65    65           65    +0
4    Great Times          3    52.5    4    5.25     8.0   56    46           46    -10
5    Winning Captain      3    59.0    5    6.50     8.0   66    59           59    -7
5    James Fitzjames      2    58.0    5    6.50     0.0   80    73           73    -7
7    King's Sailor        3    56.5    7    7.00     8.0   77    54           67    -10
8    Duke Of Orange       3    54.5    8    7.10     8.0   56    50           50    -6
9    Captains Walk        3    53.5    9    8.60     8.0   55    48           48    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Holocene 69 76 69 +7 5.0 -
2 Travel Master 72 65 71 -6 5.0 -
3 Guarding The Wall Line 65 67 65 +2 5.0
4 Great Times 56 54 46 +8 8.0 -
5 Winning Captain 66 54 59 -5 8.0 -
5 James Fitzjames 80 66 73 -7 0.0 -
7 King's Sailor 77 67 67 ✓ Match 8.0 -
8 Duke Of Orange 56 53 50 +3 8.0 -
9 Captains Walk 55 54 48 +6 8.0 -
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