Official NHA Assessment

Race 5: BOOK FOR CHARITY MILE 28 OCTOBER MR 68 HANDICAP (Open)

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Line Horse
Coromandel
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
4 / 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    Every Cloud          3    58.0    1    0.00     10.0  71    53           71    +0
2    Coromandel           4    56.0    2    2.20     7.0   60    60           60    +0
3    The Inkosana         3    58.0    3    3.90     10.0  64    55           55    -9
4    Angel's Wish         6    60.5    4    4.50     0.0   69    79           79    +10
5    Liverpool Legend     4    57.0    5    5.30     7.0   62    57           57    -5
6    Brotherhoodofmagic   2    57.5    6    5.55     0.0   83    72           73    -10
7    Rosy Lemon           5    57.0    7    5.75     0.0   64    71           71    +7
8    Summerland           5    55.0    8    6.55     0.0   59    67           67    +8
9    Skyfull              2    54.5    9    6.95     0.0   58    66           66    +8
10   Aunt Pittypat        3    58.0    10   9.35     10.0  66    53           56    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Every Cloud 71 72 71 +1 10.0 -
2 Coromandel Line 60 59 60 -1 7.0
3 The Inkosana 64 67 55 +12 10.0 -
4 Angel's Wish 69 54 79 -25 0.0 -
5 Liverpool Legend 62 59 57 +2 7.0 -
6 Brotherhoodofmagic 83 68 73 -5 0.0 -
7 Rosy Lemon 64 72 71 +1 0.0 -
8 Summerland 59 45 67 -22 0.0 -
9 Skyfull 58 54 66 -12 0.0 -
10 Aunt Pittypat 66 65 56 +9 10.0 -
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