Official NHA Assessment

Race 6: KUAN MUKHEIBIR - OLD MUTUAL MR 82 HANDICAP (Open)

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Line Horse
Donny Tee
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
5 / 10
Within 2 points
Significant Diffs
3 / 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    Purple Operator      3    55.0    1    0.00     1.5   72    74           72    +0
2    Donny Tee            4    59.0    2    0.25     2.0   81    81           81    +0
3    Transact             3    60.0    3    0.30     1.5   82    84           84    +2
4    Masked Vigilante     3    57.0    4    0.40     1.5   76    78           78    +2
5    Grey Smoke           2    58.0    5    0.50     0.5   79    82           82    +3
6    Abound               4    56.5    6    0.75     2.0   76    76           76    +0
7    Globetonic           6    56.0    7    1.00     0.0   74    79           79    +5
8    Below Deck           4    59.5    8    1.50     2.0   82    82           82    +0
9    Explosive Speed      2    52.5    9    2.25     0.5   76    71           71    -5
10   Work Of Time         2    55.5    10   5.50     0.5   82    77           77    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Purple Operator 72 74 72 +2 1.5 -
2 Donny Tee Line 81 68 81 -13 2.0
3 Transact 82 77 84 -7 1.5 -
4 Masked Vigilante 76 78 78 ✓ Match 1.5 -
5 Grey Smoke 79 77 82 -5 0.5 -
6 Abound 76 77 76 +1 2.0 -
7 Globetonic 74 77 79 -2 0.0 -
8 Below Deck 82 72 82 -10 2.0 -
9 Explosive Speed 76 68 71 -3 0.5 -
10 Work Of Time 82 75 77 -2 0.5 -
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