Official NHA Assessment

Race 3: PLAY SOCCER 6, 10 AND 13 MAIDEN PLATE (For all Maidens)

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Line Horse
Emerald City
Reference for assessment
Exact Matches
3 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 7
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    Green Machine        3    60.0    1    0.00     2.5   75    63           63    -12
2    Samuel Sharpe        3    57.5    2    2.30     2.5   73    62           63    -10
3    Emerald City         2    60.0    3    3.20     0.0   71    71           71    +0
4    Comic Artist         2    55.0    4    4.80     0.0   75    58           65    -10
5    Heroic Act           3    60.0    5    6.55     2.5   65    63           63    -2
6    Fred Frizzle         3    60.0    6    30.75    2.5   45    63           63    +18
99   Asiah's Tiara        3    56.5    99   0.00     2.5   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Green Machine 75 77 63 +14 2.5 -
2 Samuel Sharpe 73 72 63 +9 2.5 -
3 Emerald City Line 71 71 71 ✓ Match 0.0
4 Comic Artist 75 70 65 +5 0.0 -
5 Heroic Act 65 63 63 ✓ Match 2.5 -
6 Fred Frizzle 45 45 63 -18 2.5 -
99 Asiah's Tiara - 56 56 ✓ Match 2.5 -
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