Official NHA Assessment

Race 4: PLAY SOCCER 6, 10 AND 13 MAIDEN PLATE (For all Maidens)

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Line Horse
Street's Ahead
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
8 / 12
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    Billy Spellbound     2    57.0    1    0.00     0.0   72    65           65    -7
2    Main Mission         2    57.0    2    1.50     0.0   74    68           68    -6
3    Sparkling Jubilee    5    53.5    3    2.00     0.0   -     61           61    +61
4    Street's Ahead       2    53.5    4    6.25     0.0   58    58           58    +0
5    Ngokushesha          3    57.0    5    6.65     8.0   -     49           49    +49
6    Countess Danza       5    53.5    6    7.90     0.0   73    58           63    -10
7    Royal Raphael        3    57.0    7    8.00     8.0   73    49           63    -10
8    Big Five             3    60.0    8    8.20     8.0   57    55           55    -2
9    Skyjet               2    57.0    9    9.45     0.0   72    65           65    -7
10   I Am Who I Am        2    49.5    10   11.20    0.0   68    50           58    -10
11   Scabiosa             2    53.5    11   30.95    0.0   59    58           58    -1
99   London Paladium      3    53.5    99   0.00     8.0   -     42           42    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Billy Spellbound 72 73 65 +8 0.0 -
2 Main Mission 74 71 68 +3 0.0 -
3 Sparkling Jubilee - 76 61 +15 0.0 -
4 Street's Ahead Line 58 55 58 -3 0.0
5 Ngokushesha - 69 49 +20 8.0 -
6 Countess Danza 73 51 63 -12 0.0 -
7 Royal Raphael 73 54 63 -9 8.0 -
8 Big Five 57 53 55 -2 8.0 -
9 Skyjet 72 57 65 -8 0.0 -
10 I Am Who I Am 68 64 58 +6 0.0 -
11 Scabiosa 59 59 58 +1 0.0 -
99 London Paladium - 59 42 +17 8.0 -
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