Official NHA Assessment

Race 5: BOOK A TABLE CALL 011 681 1796 MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Home Of The Brave
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 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    Perfect Witness      3    57.5    1    0.00     8.0   97    71           71    -26
2    Street Art           3    62.0    2    1.25     8.0   101   86           91    -10
3    Home Of The Brave    2    56.0    3    1.40     0.0   89    89           89    +0
4    Willow's Wish        4    60.0    4    8.25     4.5   97    83           87    -10
5    Black Silver         4    55.5    5    9.50     4.5   91    74           81    -10
6    Twin Turbo           4    58.0    6    10.00    4.5   92    79           82    -10
7    Destiny Of Souls     2    58.0    7    13.75    0.0   93    88           88    -5
8    Total Surrender      5    54.0    8    13.80    0.0   85    80           80    -5
9    Millahue             3    56.0    9    20.00    8.0   89    68           79    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Perfect Witness 97 105 71 +34 8.0 -
2 Street Art 101 78 91 -13 8.0 -
3 Home Of The Brave Line 89 97 89 +8 0.0
4 Willow's Wish 97 96 87 +9 4.5 -
5 Black Silver 91 86 81 +5 4.5 -
6 Twin Turbo 92 88 82 +6 4.5 -
7 Destiny Of Souls 93 89 88 +1 0.0 -
8 Total Surrender 85 74 80 -6 0.0 -
9 Millahue 89 81 79 +2 8.0 -
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