Official NHA Assessment

Race 7: GREYVILLE CONVENTION CENTRE MR 83 HANDICAP (Open)

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Line Horse
Midnight Caller
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
4 / 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    Sundance Kid         5    57.5    1    0.00     0.0   78    80           78    +0
2    Famous And Rich      2    57.0    2    2.10     0.0   77    82           82    +5
3    Midnight Caller      4    56.0    3    2.60     2.0   75    75           75    +0
4    Roy's Command        4    54.0    4    5.40     2.0   71    69           69    -2
5    Kumemori             5    56.5    5    6.10     0.0   76    78           78    +2
6    Ibutho               7    60.5    6    7.10     0.0   87    86           86    -1
7    Mount Meru           4    53.0    7    16.10    2.0   69    67           67    -2
8    Canford Ice          2    58.0    8    17.20    0.0   87    81           81    -6
9    Lashlaroo            3    56.0    9    99.99    4.0   83    69           73    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sundance Kid 78 96 78 +18 0.0 -
2 Famous And Rich 77 66 82 -16 0.0 -
3 Midnight Caller Line 75 77 75 +2 2.0
4 Roy's Command 71 67 69 -2 2.0 -
5 Kumemori 76 71 78 -7 0.0 -
6 Ibutho 87 83 86 -3 0.0 -
7 Mount Meru 69 50 67 -17 2.0 -
8 Canford Ice 87 82 81 +1 0.0 -
9 Lashlaroo 83 73 73 ✓ Match 4.0 -
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