Official NHA Assessment

Race 2: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (Open to all horses)

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Line Horse
Peace In Our World
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 6
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    Grazinginthegrass    4    62.0    1    0.00     1.5   111   94           94    -17
2    Peace In Our World   6    58.0    2    1.25     0.0   95    95           95    +0
3    Zig Zag              5    56.5    3    2.50     0.0   88    90           90    +2
4    Jacob's Ladder       4    56.5    4    7.75     1.5   88    83           83    -5
5    Mhlabeni             7    59.5    5    13.00    0.0   96    92           92    -4
6    Ablueazure           3    53.5    6    99.99    3.5   77    73           73    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Grazinginthegrass 111 111 94 +17 1.5 -
2 Peace In Our World Line 95 89 95 -6 0.0
3 Zig Zag 88 87 90 -3 0.0 -
4 Jacob's Ladder 88 73 83 -10 1.5 -
5 Mhlabeni 96 90 92 -2 0.0 -
6 Ablueazure 77 76 73 +3 3.5 -
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