Official NHA Assessment

Race 5: PLAY SOCCER 6, 10 AND 13 PINNACLE STAKES (For all horses)

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Line Horse
Grazinginthegrass
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 8
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    Oscar Wilde          5    61.0    1    0.00     0.0   103   106          106   +3
2    Grazinginthegrass    4    61.0    2    0.10     1.0   104   104          104   +0
3    Greenlighttoheaven   4    58.0    3    0.60     1.0   93    103          103   +10
4    Tarantino            4    58.0    4    3.35     1.0   95    99           99    +4
5    Blingking            4    58.0    5    9.60     1.0   92    98           98    +6
6    Legitimate           4    56.5    6    12.10    1.0   95    95           95    +0
7    Blackball            7    61.0    7    31.35    0.0   104   106          106   +2
99   Somerset Maugham     4    59.5    99   0.00     1.0   -     101          101   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oscar Wilde 103 95 106 -11 0.0 -
2 Grazinginthegrass Line 104 111 104 +7 1.0
3 Greenlighttoheaven 93 83 103 -20 1.0 -
4 Tarantino 95 96 99 -3 1.0 -
5 Blingking 92 90 98 -8 1.0 -
6 Legitimate 95 89 95 -6 1.0 -
7 Blackball 104 100 106 -6 0.0 -
99 Somerset Maugham - 97 101 -4 1.0 -
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