Official NHA Assessment

Race 7: RACEHORSE OWNERS ASSOCIATION MR 96 HANDICAP (Open)

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Line Horse
Sheldon
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
5 / 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    Lucy English         3    55.5    1    0.00     4.5   86    78           86    +0
2    Umthombo Wolwazi     2    53.0    2    1.00     3.0   88    76           78    -10
3    Sheldon              6    59.5    3    2.20     0.0   95    95           95    +0
4    Wind Water           3    54.0    4    2.25     4.5   89    75           79    -10
5    Set To Go            2    53.5    5    3.35     3.0   89    77           79    -10
6    Twin Strike          2    55.5    6    5.50     3.0   93    81           83    -10
7    May Queen            5    58.5    7    6.75     0.0   93    93           93    +0
8    Godswood             4    62.0    8    7.25     5.0   105   90           95    -10
9    Existentialist       2    52.5    9    14.25    3.0   87    75           77    -10
10   Samuel Salt          3    59.0    10   16.50    4.5   94    85           85    -9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lucy English 86 90 86 +4 4.5 -
2 Umthombo Wolwazi 88 91 78 +13 3.0 -
3 Sheldon Line 95 106 95 +11 0.0
4 Wind Water 89 89 79 +10 4.5 -
5 Set To Go 89 84 79 +5 3.0 -
6 Twin Strike 93 90 83 +7 3.0 -
7 May Queen 93 90 93 -3 0.0 -
8 Godswood 105 106 95 +11 5.0 -
9 Existentialist 87 80 77 +3 3.0 -
10 Samuel Salt 94 82 85 -3 4.5 -
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