Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION MR 72 HANDICAP (Open)

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Line Horse
Admiralty Arch
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
5 / 11
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    Timeforthat          4    52.0    1    0.00     2.5   56    58           56    +0
2    Sequoia              6    60.0    2    0.75     0.0   72    83           83    +11
3    Admiralty Arch       3    60.0    3    2.25     5.0   72    72           72    +0
4    Tinder Dry           3    59.5    4    3.25     5.0   71    70           70    -1
5    Luthuli              5    49.5    5    5.25     0.0   66    58           58    -8
6    Montmerency          3    57.5    6    5.50     5.0   67    64           64    -3
7    Absolute Value       3    50.0    7    6.00     5.0   57    49           49    -8
8    Flying Grace         4    60.0    8    6.05     2.5   72    74           74    +2
9    Call Me The Breeze   2    54.5    9    6.25     0.0   71    68           68    -3
10   Global Approach      4    53.5    10   10.50    2.5   59    61           61    +2
99   Treaty               2    52.0    99   0.00     0.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Timeforthat 56 60 56 +4 2.5 -
2 Sequoia 72 99 83 +16 0.0 -
3 Admiralty Arch Line 72 77 72 +5 5.0
4 Tinder Dry 71 66 70 -4 5.0 -
5 Luthuli 66 74 58 +16 0.0 -
6 Montmerency 67 59 64 -5 5.0 -
7 Absolute Value 57 84 49 +35 5.0 -
8 Flying Grace 72 63 74 -11 2.5 -
9 Call Me The Breeze 71 63 68 -5 0.0 -
10 Global Approach 59 56 61 -5 2.5 -
99 Treaty - 48 63 -15 0.0 -
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