Official NHA Assessment

Race 4: OK SHOPEASY GRADUATION PLATE (Maidens,1 & 2 time winners)

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Line Horse
Al Mashriq
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 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    Keen Spirit          3    57.5    1    0.00     2.0   64    57           57    -7
2    Emily's Song (ZIM)   4    55.5    2    0.05     2.5   58    52           52    -6
3    Al Mashriq           4    60.0    3    3.05     2.5   61    61           61    +0
4    Cha Vez              3    57.5    4    6.05     2.0   57    57           57    +0
5    Powder Puff          4    54.5    5    6.10     2.5   70    50           60    -10
6    Manvir               3    57.5    6    12.10    2.0   60    57           57    -3
7    Mustatheef           3    57.5    7    17.10    2.0   62    57           57    -5
8    Pacific Duke         4    58.0    8    19.10    2.5   72    57           62    -10
9    Albar Warning        3    57.0    9    21.60    2.0   50    56           56    +6
10   Assume               3    57.0    10   23.10    2.0   59    56           56    -3
99   Var Aglow            5    59.5    99   0.00     0.0   -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Keen Spirit 64 71 57 +14 2.0 -
2 Emily's Song (ZIM) 58 66 52 +14 2.5 -
3 Al Mashriq Line 61 71 61 +10 2.5
4 Cha Vez 57 55 57 -2 2.0 -
5 Powder Puff 70 58 60 -2 2.5 -
6 Manvir 60 52 57 -5 2.0 -
7 Mustatheef 62 42 57 -15 2.0 -
8 Pacific Duke 72 49 62 -13 2.5 -
9 Albar Warning 50 48 56 -8 2.0 -
10 Assume 59 58 56 +2 2.0 -
99 Var Aglow - 84 65 +19 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