Official NHA Assessment

Race 8: NEXT TURFFONTEIN RACEMEETING SATURDAY 7 OCTOBER MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Breeze Over
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
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    Rule Book            6    54.0    1    0.00     0.0   75    76           76    +1
2    Breeze Over          5    56.0    2    1.75     0.0   84    84           84    +0
3    American Grayson     3    56.0    3    4.75     11.0  82    58           72    -10
4    Over Two You         3    54.0    4    8.00     11.0  72    54           62    -10
5    Flying First Class   4    57.5    5    11.00    8.0   87    67           77    -10
6    Indian War Dance     3    54.0    6    12.40    11.0  58    54           54    -4
7    Coromandel           4    54.0    7    13.70    8.0   64    60           60    -4
8    The Kop              4    57.5    8    19.40    8.0   86    67           76    -10
9    Kind Judy            4    51.5    9    21.15    8.0   72    55           62    -10
10   Barneys Pride        3    54.0    10   32.40    11.0  76    54           66    -10
99   Battleground         5    58.0    99   0.00     0.0   -     84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rule Book 75 92 76 +16 0.0 -
2 Breeze Over Line 84 99 84 +15 0.0
3 American Grayson 82 84 72 +12 11.0 -
4 Over Two You 72 74 62 +12 11.0 -
5 Flying First Class 87 82 77 +5 8.0 -
6 Indian War Dance 58 58 54 +4 11.0 -
7 Coromandel 64 59 60 -1 8.0 -
8 The Kop 86 78 76 +2 8.0 -
9 Kind Judy 72 73 62 +11 8.0 -
10 Barneys Pride 76 76 66 +10 11.0 -
99 Battleground - 92 84 +8 0.0 -
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