Official NHA Assessment

Race 2: 4RACING.TV MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Celtic Vixen
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
6 / 11
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    Exclusively Yours    2    57.0    1    0.00     0.0   70    57           57    -13
2    Nairobi              3    60.0    2    1.75     8.5   59    49           49    -10
3    Captivate            2    57.0    3    3.75     0.0   57    58           58    +1
4    Celtic Vixen         4    60.0    4    3.85     6.0   52    52           52    +0
5    Taste Maker          3    60.0    5    5.10     8.5   58    46           48    -10
6    Red Love             2    57.0    6    5.35     0.0   61    57           57    -4
7    Swiftwinged          2    57.0    7    6.10     0.0   68    57           58    -10
8    Komeshan Logan       2    57.0    8    9.10     0.0   -     57           57    +57
9    Forty Hot            2    57.0    9    9.60     0.0   70    57           60    -10
10   Misava               3    60.0    10   13.35    8.5   55    46           46    -9
11   Magic Measure        2    57.5    11   99.99    0.0   -     58           58    +58
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Exclusively Yours 70 73 57 +16 0.0 -
2 Nairobi 59 53 49 +4 8.5 -
3 Captivate 57 63 58 +5 0.0 -
4 Celtic Vixen Line 52 58 52 +6 6.0
5 Taste Maker 58 54 48 +6 8.5 -
6 Red Love 61 64 57 +7 0.0 -
7 Swiftwinged 68 62 58 +4 0.0 -
8 Komeshan Logan - 54 57 -3 0.0 -
9 Forty Hot 70 61 60 +1 0.0 -
10 Misava 55 53 46 +7 8.5 -
11 Magic Measure - 28 58 -30 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