Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Intro
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 9
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    Gerbera              3    59.0    1    0.00     5.0   -     72           6     +6
2    Cherry Oh Baby       4    60.0    2    1.60     2.5   66    82           82    +16
3    Intro                3    59.0    3    6.40     5.0   72    72           72    +0
4    Lacewing             3    59.0    4    6.50     5.0   77    72           72    -5
5    Asiah's Tiara        3    59.0    5    9.25     5.0   76    72           72    -4
6    Quello Che           3    59.0    6    12.75    5.0   70    72           72    +2
7    Red Sparrow          3    57.5    7    15.00    5.0   -     69           69    +69
8    Mischief Managed     3    59.0    8    32.00    5.0   -     72           72    +72
99   Izanami              3    59.0    99   0.00     5.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gerbera - 98 6 +92 5.0 -
2 Cherry Oh Baby 66 78 82 -4 2.5 -
3 Intro Line 72 66 72 -6 5.0
4 Lacewing 77 71 72 -1 5.0 -
5 Asiah's Tiara 76 56 72 -16 5.0 -
6 Quello Che 70 61 72 -11 5.0 -
7 Red Sparrow - 55 69 -14 5.0 -
8 Mischief Managed - - 72 -72 5.0 -
99 Izanami - 72 72 ✓ Match 5.0 -
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