Official NHA Assessment

Race 3: 4RACING.TV MAIDEN PLATE (F & M) (For Maiden (F&M) R15 000 Win Bonus ROA Members)

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Line Horse
Yaya Maria
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
7 / 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    I'm In Love          3    60.0    1    0.00     4.0   63    59           59    -4
2    Mercurial Jet        3    60.0    2    0.10     4.0   60    59           59    -1
3    Yaya Maria           2    59.0    3    0.60     0.0   70    70           70    +0
4    Red Centre           2    59.0    4    1.85     0.0   59    68           68    +9
5    Texas Tornado        2    59.0    5    4.60     0.0   52    65           65    +13
6    Daisy Duke           2    59.0    6    7.85     0.0   76    65           66    -10
7    Who Are You          2    59.0    7    8.60     0.0   59    65           65    +6
8    Make A Deal          3    59.0    8    9.85     4.0   -     57           57    +57
9    Elusive Jewel        2    59.0    9    10.10    0.0   58    65           65    +7
10   Royal Venus          2    59.0    10   10.15    0.0   54    65           65    +11
99   Mi Mi Apple Pie      3    60.0    99   0.00     4.0   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 I'm In Love 63 63 59 +4 4.0 -
2 Mercurial Jet 60 59 59 ✓ Match 4.0 -
3 Yaya Maria Line 70 60 70 -10 0.0
4 Red Centre 59 72 68 +4 0.0 -
5 Texas Tornado 52 55 65 -10 0.0 -
6 Daisy Duke 76 47 66 -19 0.0 -
7 Who Are You 59 58 65 -7 0.0 -
8 Make A Deal - 40 57 -17 4.0 -
9 Elusive Jewel 58 57 65 -8 0.0 -
10 Royal Venus 54 50 65 -15 0.0 -
99 Mi Mi Apple Pie - 56 59 -3 4.0 -
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