Official NHA Assessment

Race 4: WWW.TAB4RACING.COM MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Lunar Rainbow
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
10 / 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    Fetching Flyer       3    57.0    1    0.00     9.0   75    69           69    -6
2    Rising Russian       2    57.0    2    4.80     0.0   66    87           87    +21
3    Quello Che           3    57.0    3    5.60     9.0   77    69           69    -8
4    Lunar Rainbow        3    57.0    4    7.60     9.0   69    69           69    +0
5    Regina Maris         2    57.0    5    7.90     0.0   68    87           87    +19
6    Perform              2    60.0    6    16.15    0.0   56    93           93    +37
7    Ice Spa              2    57.5    7    19.65    0.0   45    88           88    +43
8    Sienna Rae           2    57.0    8    19.75    0.0   60    87           87    +27
9    Cantkeepasecret      2    57.0    9    20.50    0.0   -     87           87    +87
99   African Beauty       2    54.5    99   0.00     0.0   -     82           82    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fetching Flyer 75 84 69 +15 9.0 -
2 Rising Russian 66 70 87 -17 0.0 -
3 Quello Che 77 61 69 -8 9.0 -
4 Lunar Rainbow Line 69 57 69 -12 9.0
5 Regina Maris 68 68 87 -19 0.0 -
6 Perform 56 54 93 -39 0.0 -
7 Ice Spa 45 45 88 -43 0.0 -
8 Sienna Rae 60 57 87 -30 0.0 -
9 Cantkeepasecret - 57 87 -30 0.0 -
99 African Beauty - 66 82 -16 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