Official NHA Assessment

Race 8: NEXT TURFFONTEIN RACEMEETING SATURDAY 26 MARCH CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Corvette Captain
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
4 / 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    The Makwakkers       6    58.0    1    0.00     0.0   66    66           66    +0
2    Trust The Fire       4    58.0    2    0.40     4.0   65    58           58    -7
3    True Brit            3    54.0    3    0.80     3.5   59    51           51    -8
4    Corvette Captain     5    60.0    4    1.10     0.0   70    70           70    +0
5    Rising Fenix         3    58.5    5    2.70     3.5   74    60           64    -10
6    Tallinn              5    58.5    6    2.90     0.0   68    67           67    -1
7    Edward Longshanks    3    56.0    7    3.10     3.5   65    55           55    -10
8    Father Time          5    54.0    8    4.50     0.0   57    58           58    +1
9    Charge Down          4    58.0    9    5.30     4.0   66    58           58    -8
10   Veneta               3    52.5    10   5.40     3.5   62    48           52    -10
11   What Gives           3    56.5    11   7.30     3.5   69    56           59    -10
12   Bridge Of Spies      6    54.0    12   7.60     0.0   51    58           58    +7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Makwakkers 66 68 66 +2 0.0 -
2 Trust The Fire 65 65 58 +7 4.0 -
3 True Brit 59 55 51 +4 3.5 -
4 Corvette Captain Line 70 75 70 +5 0.0
5 Rising Fenix 74 63 64 -1 3.5 -
6 Tallinn 68 63 67 -4 0.0 -
7 Edward Longshanks 65 62 55 +7 3.5 -
8 Father Time 57 56 58 -2 0.0 -
9 Charge Down 66 51 58 -7 4.0 -
10 Veneta 62 49 52 -3 3.5 -
11 What Gives 69 64 59 +5 3.5 -
12 Bridge Of Spies 51 48 58 -10 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