Official NHA Assessment

Race 9: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 96 HANDICAP (Open)

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Line Horse
Open Highway
Reference for assessment
Exact Matches
3 / 12
Calculated = Official
Close Matches
9 / 12
Within 2 points
Significant Diffs
0 / 12
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    Kudzu                2    54.5    1    0.00     0.0   84    87           84    +0
2    Olympian Gold        2    52.0    2    0.40     0.0   85    87           87    +2
3    Open Highway         4    57.5    3    1.70     1.0   94    94           94    +0
4    Ideal Summer         2    52.5    4    1.90     0.0   86    86           86    +0
5    Diogenes             2    59.0    5    3.20     0.0   99    98           98    -1
6    Wayne                3    57.0    6    4.00     2.5   95    88           88    -7
7    Royal Edition        4    58.5    7    4.75     1.0   93    93           93    +0
8    Diwali Rocket        3    55.5    8    5.45     2.5   87    84           84    -3
9    Titans Of War        2    57.0    9    5.55     0.0   95    92           92    -3
10   Jordan               4    56.0    10   6.05     1.0   88    88           88    +0
11   River Romeo          2    59.0    11   24.25    0.0   94    96           96    +2
99   Doitwithdiamonds     4    61.5    99   0.00     1.0   -     99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kudzu 84 88 84 +4 0.0 -
2 Olympian Gold 85 86 87 -1 0.0 -
3 Open Highway Line 94 94 94 ✓ Match 1.0
4 Ideal Summer 86 85 86 -1 0.0 -
5 Diogenes 99 99 98 +1 0.0 -
6 Wayne 95 92 88 +4 2.5 -
7 Royal Edition 93 92 93 -1 1.0 -
8 Diwali Rocket 87 86 84 +2 2.5 -
9 Titans Of War 95 95 92 +3 0.0 -
10 Jordan 88 88 88 ✓ Match 1.0 -
11 River Romeo 94 94 96 -2 0.0 -
99 Doitwithdiamonds - 99 99 ✓ Match 1.0 -
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