Official NHA Assessment

Race 9: NEXT TURFFONTEIN RACEMEETING SATURDAY 10 AUGUST CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
Coming In Hot
Reference for assessment
Exact Matches
1 / 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    Secret Chord         4    60.0    1    0.00     12.0  74    70           70    -4
2    John Wick            2    60.0    2    0.25     7.0   74    80           80    +6
3    Coming In Hot        3    56.0    3    1.50     10.5  65    65           65    +0
4    Sakhala Is'Cathulo   3    60.0    4    2.50     10.5  74    73           73    -1
5    In The Ether         6    54.0    5    2.75     0.0   71    82           82    +11
6    Gaelic Dancer        3    54.5    6    3.50     10.5  79    62           69    -10
7    Inafix               4    52.0    7    4.00     12.0  57    54           54    -3
8    Life Goes On         7    54.0    8    4.25     0.0   62    82           82    +20
9    Golden Chandelier    2    58.5    9    5.75     7.0   89    77           79    -10
10   Bridge Of Spies      6    52.0    10   13.00    0.0   48    78           78    +30
99   Heirloom             4    58.5    99   0.00     12.0  -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Secret Chord 74 92 70 +22 12.0 -
2 John Wick 74 82 80 +2 7.0 -
3 Coming In Hot Line 65 76 65 +11 10.5
4 Sakhala Is'Cathulo 74 66 73 -7 10.5 -
5 In The Ether 71 63 82 -19 0.0 -
6 Gaelic Dancer 79 64 69 -5 10.5 -
7 Inafix 57 69 54 +15 12.0 -
8 Life Goes On 62 54 82 -28 0.0 -
9 Golden Chandelier 89 82 79 +3 7.0 -
10 Bridge Of Spies 48 48 78 -30 0.0 -
99 Heirloom - 67 67 ✓ Match 12.0 -
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