Official NHA Assessment

Race 6: CHAMPION WORK RIDER LOUIS BURKE & CHAMPION JOCKEY RICHARD FOURIE CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0

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Line Horse
Hampstead Heath
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 10
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    Tap Shoes            3    60.5    1    0.00     9.0   82    74           74    -8
2    Hampstead Heath      4    59.5    2    1.50     7.0   79    79           79    +0
3    Pentolina            3    59.0    3    1.55     9.0   79    74           74    -5
4    Lavender Bay         4    60.5    4    1.85     7.0   81    81           81    +0
5    Wehaveasituation     4    54.5    5    3.60     7.0   68    67           67    -1
6    Apricity             2    52.0    6    4.35     0.0   85    75           75    -10
7    Miraculous           3    60.5    7    4.85     9.0   82    74           74    -8
8    Street Talk          3    56.5    8    5.25     9.0   74    66           66    -8
9    Lady Springfield     3    61.5    9    9.00     9.0   84    76           76    -8
10   Take It As Red       2    52.5    10   10.25    0.0   83    76           76    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tap Shoes 82 86 74 +12 9.0 -
2 Hampstead Heath Line 79 75 79 -4 7.0
3 Pentolina 79 80 74 +6 9.0 -
4 Lavender Bay 81 95 81 +14 7.0 -
5 Wehaveasituation 68 73 67 +6 7.0 -
6 Apricity 85 74 75 -1 0.0 -
7 Miraculous 82 79 74 +5 9.0 -
8 Street Talk 74 68 66 +2 9.0 -
9 Lady Springfield 84 81 76 +5 9.0 -
10 Take It As Red 83 69 76 -7 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